/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 23:04:31,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 23:04:31,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 23:04:31,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 23:04:31,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 23:04:31,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 23:04:31,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 23:04:31,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 23:04:31,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 23:04:31,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 23:04:31,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 23:04:31,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 23:04:31,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 23:04:31,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 23:04:31,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 23:04:31,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 23:04:31,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 23:04:31,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 23:04:31,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 23:04:31,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 23:04:31,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 23:04:31,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 23:04:31,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 23:04:31,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 23:04:31,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 23:04:31,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 23:04:31,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 23:04:31,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 23:04:31,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 23:04:31,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 23:04:31,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 23:04:31,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 23:04:31,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 23:04:31,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 23:04:31,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 23:04:31,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 23:04:31,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 23:04:31,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 23:04:31,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 23:04:31,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 23:04:31,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 23:04:31,227 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 23:04:31,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 23:04:31,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 23:04:31,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 23:04:31,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 23:04:31,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 23:04:31,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 23:04:31,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 23:04:31,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 23:04:31,229 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 23:04:31,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 23:04:31,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 23:04:31,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 23:04:31,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 23:04:31,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 23:04:31,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 23:04:31,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 23:04:31,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 23:04:31,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 23:04:31,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 23:04:31,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 23:04:31,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 23:04:31,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 23:04:31,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 23:04:31,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 23:04:31,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 23:04:31,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 23:04:31,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 23:04:31,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 23:04:31,629 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 23:04:31,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-15 23:04:31,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed586165/dbcfcc70115649d986a47ad95b2272e2/FLAG4cc17f33e [2020-10-15 23:04:32,421 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 23:04:32,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-15 23:04:32,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed586165/dbcfcc70115649d986a47ad95b2272e2/FLAG4cc17f33e [2020-10-15 23:04:32,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed586165/dbcfcc70115649d986a47ad95b2272e2 [2020-10-15 23:04:32,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 23:04:32,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 23:04:32,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 23:04:32,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 23:04:32,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 23:04:32,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:04:32" (1/1) ... [2020-10-15 23:04:32,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7267ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:32, skipping insertion in model container [2020-10-15 23:04:32,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:04:32" (1/1) ... [2020-10-15 23:04:32,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 23:04:32,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 23:04:33,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:04:33,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 23:04:33,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:04:33,651 INFO L208 MainTranslator]: Completed translation [2020-10-15 23:04:33,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33 WrapperNode [2020-10-15 23:04:33,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 23:04:33,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 23:04:33,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 23:04:33,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 23:04:33,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 23:04:33,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 23:04:33,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 23:04:33,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 23:04:33,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... [2020-10-15 23:04:33,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 23:04:33,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 23:04:33,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 23:04:33,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 23:04:33,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 23:04:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-15 23:04:33,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-15 23:04:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 23:04:33,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 23:04:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 23:04:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 23:04:33,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 23:04:33,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 23:04:33,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 23:04:33,836 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 23:04:34,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 23:04:34,243 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-15 23:04:34,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:04:34 BoogieIcfgContainer [2020-10-15 23:04:34,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 23:04:34,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 23:04:34,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 23:04:34,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 23:04:34,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 11:04:32" (1/3) ... [2020-10-15 23:04:34,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f2aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:04:34, skipping insertion in model container [2020-10-15 23:04:34,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:04:33" (2/3) ... [2020-10-15 23:04:34,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f2aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:04:34, skipping insertion in model container [2020-10-15 23:04:34,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:04:34" (3/3) ... [2020-10-15 23:04:34,258 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-10-15 23:04:34,277 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 23:04:34,277 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 23:04:34,290 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 23:04:34,292 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 23:04:34,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,337 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,338 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,338 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,339 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,350 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,359 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,360 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,360 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,361 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,368 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,368 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,369 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,369 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,369 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,370 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:34,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 23:04:34,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:04:34,421 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:04:34,421 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:04:34,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:04:34,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:04:34,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:04:34,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:04:34,422 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:04:34,437 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:04:34,441 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-15 23:04:34,445 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 58 transitions, 126 flow [2020-10-15 23:04:34,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-15 23:04:34,500 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-15 23:04:34,501 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 23:04:34,509 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-15 23:04:34,513 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-15 23:04:35,993 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-15 23:04:36,369 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-15 23:04:36,479 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-15 23:04:36,652 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-15 23:04:36,741 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-15 23:04:36,741 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-15 23:04:36,754 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-15 23:04:36,770 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-15 23:04:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-15 23:04:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:04:36,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:36,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:04:36,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:36,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-10-15 23:04:36,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:36,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879577778] [2020-10-15 23:04:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:37,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879577778] [2020-10-15 23:04:37,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:37,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:04:37,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222765093] [2020-10-15 23:04:37,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:04:37,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:37,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:04:37,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:37,070 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-15 23:04:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:37,124 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-15 23:04:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:04:37,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:04:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:37,146 INFO L225 Difference]: With dead ends: 35 [2020-10-15 23:04:37,146 INFO L226 Difference]: Without dead ends: 31 [2020-10-15 23:04:37,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-15 23:04:37,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-15 23:04:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 23:04:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-15 23:04:37,212 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-15 23:04:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:37,213 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-15 23:04:37,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:04:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-15 23:04:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 23:04:37,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:37,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:37,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 23:04:37,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:37,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-10-15 23:04:37,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:37,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557887735] [2020-10-15 23:04:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:37,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557887735] [2020-10-15 23:04:37,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:37,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 23:04:37,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598204960] [2020-10-15 23:04:37,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 23:04:37,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:37,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 23:04:37,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 23:04:37,322 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-15 23:04:37,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:37,351 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-15 23:04:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 23:04:37,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-15 23:04:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:37,380 INFO L225 Difference]: With dead ends: 26 [2020-10-15 23:04:37,380 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 23:04:37,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 23:04:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 23:04:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-15 23:04:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 23:04:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-15 23:04:37,388 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-15 23:04:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:37,388 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-15 23:04:37,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 23:04:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-15 23:04:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 23:04:37,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:37,390 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:37,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 23:04:37,390 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-15 23:04:37,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:37,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759526932] [2020-10-15 23:04:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:04:37,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:04:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:04:37,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:04:37,478 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:04:37,478 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:04:37,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 23:04:37,479 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:04:37,481 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:04:37,482 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 23:04:37,493 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,494 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,494 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,495 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,495 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,495 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,495 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,496 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,504 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,504 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,506 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,507 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,507 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,510 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:37,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 23:04:37,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:04:37,517 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:04:37,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:04:37,518 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:04:37,518 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:04:37,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:04:37,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:04:37,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:04:37,521 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:04:37,522 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-15 23:04:37,522 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 74 transitions, 172 flow [2020-10-15 23:04:37,522 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-15 23:04:37,547 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-15 23:04:37,547 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 23:04:37,548 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-15 23:04:37,551 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-15 23:04:38,996 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-15 23:04:39,237 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 23:04:39,395 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 23:04:39,400 INFO L132 LiptonReduction]: Checked pairs total: 1122 [2020-10-15 23:04:39,401 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-15 23:04:39,401 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-15 23:04:39,417 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-15 23:04:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-15 23:04:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:04:39,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:39,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:04:39,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-10-15 23:04:39,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:39,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984184137] [2020-10-15 23:04:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:39,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984184137] [2020-10-15 23:04:39,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:39,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:04:39,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891798870] [2020-10-15 23:04:39,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:04:39,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:04:39,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:39,459 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-15 23:04:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:39,524 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-15 23:04:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:04:39,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:04:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:39,531 INFO L225 Difference]: With dead ends: 185 [2020-10-15 23:04:39,532 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 23:04:39,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 23:04:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-15 23:04:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 23:04:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-15 23:04:39,563 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-15 23:04:39,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:39,564 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-15 23:04:39,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:04:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-15 23:04:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:04:39,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:39,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:39,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 23:04:39,566 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:39,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-10-15 23:04:39,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:39,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020716005] [2020-10-15 23:04:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:39,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020716005] [2020-10-15 23:04:39,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:39,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:39,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960630669] [2020-10-15 23:04:39,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:39,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:39,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:39,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:39,653 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-15 23:04:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:39,785 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-15 23:04:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:39,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:04:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:39,790 INFO L225 Difference]: With dead ends: 205 [2020-10-15 23:04:39,790 INFO L226 Difference]: Without dead ends: 201 [2020-10-15 23:04:39,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-15 23:04:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-15 23:04:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-15 23:04:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-15 23:04:39,817 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-15 23:04:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:39,817 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-15 23:04:39,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-15 23:04:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:04:39,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:39,820 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:39,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 23:04:39,820 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:39,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:39,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-10-15 23:04:39,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:39,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367094721] [2020-10-15 23:04:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:39,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367094721] [2020-10-15 23:04:39,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:39,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:39,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199622256] [2020-10-15 23:04:39,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:39,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:39,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:39,900 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-15 23:04:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:39,987 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-15 23:04:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:39,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:04:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:39,990 INFO L225 Difference]: With dead ends: 189 [2020-10-15 23:04:39,991 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 23:04:39,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 23:04:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-15 23:04:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-15 23:04:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-15 23:04:40,007 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-15 23:04:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:40,009 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-15 23:04:40,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-15 23:04:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 23:04:40,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:40,011 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:40,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 23:04:40,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-10-15 23:04:40,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:40,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015525081] [2020-10-15 23:04:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:04:40,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:04:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:04:40,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:04:40,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:04:40,048 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:04:40,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 23:04:40,049 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:04:40,049 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:04:40,051 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 23:04:40,061 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,061 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,063 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,063 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,063 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,064 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,064 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,070 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,070 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,071 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,085 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,085 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,085 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,089 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,089 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,090 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,095 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,096 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,097 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,097 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,105 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,105 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,106 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,106 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:40,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 23:04:40,133 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:04:40,133 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:04:40,134 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:04:40,134 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:04:40,134 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:04:40,134 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:04:40,134 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:04:40,134 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:04:40,139 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:04:40,140 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-15 23:04:40,140 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 90 transitions, 222 flow [2020-10-15 23:04:40,140 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-15 23:04:40,201 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-15 23:04:40,201 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-15 23:04:40,204 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-15 23:04:40,211 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-15 23:04:41,765 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-15 23:04:42,048 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-15 23:04:42,214 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 23:04:42,220 INFO L132 LiptonReduction]: Checked pairs total: 1841 [2020-10-15 23:04:42,220 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-15 23:04:42,221 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-15 23:04:42,256 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-15 23:04:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-15 23:04:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:04:42,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:42,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:04:42,257 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:42,258 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-10-15 23:04:42,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:42,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644322561] [2020-10-15 23:04:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:42,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644322561] [2020-10-15 23:04:42,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:42,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:04:42,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233907173] [2020-10-15 23:04:42,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:04:42,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:42,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:04:42,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:42,292 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-15 23:04:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:42,335 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-15 23:04:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:04:42,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:04:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:42,344 INFO L225 Difference]: With dead ends: 600 [2020-10-15 23:04:42,344 INFO L226 Difference]: Without dead ends: 559 [2020-10-15 23:04:42,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-15 23:04:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-15 23:04:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-15 23:04:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-15 23:04:42,400 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-15 23:04:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:42,400 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-15 23:04:42,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:04:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-15 23:04:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:04:42,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:42,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:42,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 23:04:42,402 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:42,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-10-15 23:04:42,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:42,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698903627] [2020-10-15 23:04:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:42,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698903627] [2020-10-15 23:04:42,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:42,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:42,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640690286] [2020-10-15 23:04:42,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:42,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:42,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:42,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:42,457 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-15 23:04:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:42,594 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-15 23:04:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:42,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:04:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:42,603 INFO L225 Difference]: With dead ends: 817 [2020-10-15 23:04:42,603 INFO L226 Difference]: Without dead ends: 812 [2020-10-15 23:04:42,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-15 23:04:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-15 23:04:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-15 23:04:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-15 23:04:42,670 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-15 23:04:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:42,670 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-15 23:04:42,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-15 23:04:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:04:42,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:42,678 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:42,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 23:04:42,679 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:42,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:42,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-10-15 23:04:42,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:42,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152874701] [2020-10-15 23:04:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:42,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152874701] [2020-10-15 23:04:42,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:42,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:42,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577310079] [2020-10-15 23:04:42,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:42,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:42,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:42,749 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-15 23:04:42,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:42,877 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-15 23:04:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:42,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:04:42,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:42,888 INFO L225 Difference]: With dead ends: 843 [2020-10-15 23:04:42,888 INFO L226 Difference]: Without dead ends: 836 [2020-10-15 23:04:42,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-15 23:04:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-15 23:04:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-15 23:04:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-15 23:04:42,935 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-15 23:04:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:42,935 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-15 23:04:42,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-15 23:04:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:04:42,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:42,937 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:42,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 23:04:42,937 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:42,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:42,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-10-15 23:04:42,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:42,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138875203] [2020-10-15 23:04:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:43,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138875203] [2020-10-15 23:04:43,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910470822] [2020-10-15 23:04:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:43,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:04:43,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:43,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:43,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:04:43,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414295448] [2020-10-15 23:04:43,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:04:43,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:43,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:04:43,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:04:43,211 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-10-15 23:04:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:43,567 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-15 23:04:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:43,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:04:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:43,580 INFO L225 Difference]: With dead ends: 1059 [2020-10-15 23:04:43,580 INFO L226 Difference]: Without dead ends: 1052 [2020-10-15 23:04:43,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:04:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-15 23:04:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-15 23:04:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-15 23:04:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-15 23:04:43,621 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-15 23:04:43,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:43,622 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-15 23:04:43,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:04:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-15 23:04:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:04:43,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:43,624 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:43,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-15 23:04:43,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:43,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:43,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-10-15 23:04:43,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:43,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923318371] [2020-10-15 23:04:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:43,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923318371] [2020-10-15 23:04:43,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:43,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:04:43,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556273012] [2020-10-15 23:04:43,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:04:43,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:43,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:04:43,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:43,899 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-15 23:04:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:44,223 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-15 23:04:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:44,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:04:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:44,234 INFO L225 Difference]: With dead ends: 1053 [2020-10-15 23:04:44,234 INFO L226 Difference]: Without dead ends: 1045 [2020-10-15 23:04:44,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:04:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-15 23:04:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-15 23:04:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-15 23:04:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-15 23:04:44,268 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-15 23:04:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:44,269 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-15 23:04:44,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:04:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-15 23:04:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:04:44,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:44,270 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:44,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 23:04:44,270 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:44,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-10-15 23:04:44,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:44,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750200325] [2020-10-15 23:04:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:04:44,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750200325] [2020-10-15 23:04:44,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:44,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:44,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963289004] [2020-10-15 23:04:44,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:44,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:44,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:44,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:44,323 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-15 23:04:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:44,459 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-15 23:04:44,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:44,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:04:44,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:44,466 INFO L225 Difference]: With dead ends: 736 [2020-10-15 23:04:44,467 INFO L226 Difference]: Without dead ends: 728 [2020-10-15 23:04:44,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-15 23:04:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-15 23:04:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-15 23:04:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-15 23:04:44,499 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-15 23:04:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:44,500 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-15 23:04:44,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:44,500 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-15 23:04:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 23:04:44,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:44,501 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:44,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 23:04:44,501 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:04:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:44,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-10-15 23:04:44,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:44,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315248236] [2020-10-15 23:04:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:04:44,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:04:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:04:44,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:04:44,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:04:44,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:04:44,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 23:04:44,580 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:04:44,581 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:04:44,582 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 23:04:44,605 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,606 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,608 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,609 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,609 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,609 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,612 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,613 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,620 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,620 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,621 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,621 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,625 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,626 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,629 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,629 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,629 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,629 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,632 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,633 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:04:44,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 23:04:44,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:04:44,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:04:44,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:04:44,651 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:04:44,651 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:04:44,651 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:04:44,651 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:04:44,652 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:04:44,654 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:04:44,655 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-15 23:04:44,655 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 276 flow [2020-10-15 23:04:44,656 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-15 23:04:44,709 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-15 23:04:44,709 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-15 23:04:44,714 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-15 23:04:44,718 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-15 23:04:46,626 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-15 23:04:46,729 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-15 23:04:46,973 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-15 23:04:47,171 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-15 23:04:47,273 INFO L132 LiptonReduction]: Checked pairs total: 2590 [2020-10-15 23:04:47,274 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-15 23:04:47,274 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-15 23:04:47,414 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-15 23:04:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-15 23:04:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:04:47,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:47,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:04:47,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:47,416 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-10-15 23:04:47,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:47,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425611828] [2020-10-15 23:04:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:47,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425611828] [2020-10-15 23:04:47,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:47,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:04:47,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145446068] [2020-10-15 23:04:47,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:04:47,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:47,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:04:47,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:47,448 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-15 23:04:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:47,536 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-15 23:04:47,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:04:47,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:04:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:47,557 INFO L225 Difference]: With dead ends: 1889 [2020-10-15 23:04:47,558 INFO L226 Difference]: Without dead ends: 1767 [2020-10-15 23:04:47,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:04:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-15 23:04:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-15 23:04:47,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-15 23:04:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-15 23:04:47,674 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-15 23:04:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:47,675 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-15 23:04:47,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:04:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-15 23:04:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:04:47,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:47,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:47,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 23:04:47,676 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:47,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:47,676 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-10-15 23:04:47,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:47,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976150066] [2020-10-15 23:04:47,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:47,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976150066] [2020-10-15 23:04:47,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:47,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:47,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144606983] [2020-10-15 23:04:47,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:47,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:47,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:47,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:47,726 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-15 23:04:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:47,868 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-15 23:04:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:47,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:04:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:47,900 INFO L225 Difference]: With dead ends: 2905 [2020-10-15 23:04:47,900 INFO L226 Difference]: Without dead ends: 2899 [2020-10-15 23:04:47,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-15 23:04:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-15 23:04:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-15 23:04:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-15 23:04:48,044 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-15 23:04:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:48,045 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-15 23:04:48,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-15 23:04:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:04:48,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:48,046 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:48,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 23:04:48,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:48,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-10-15 23:04:48,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:48,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143865512] [2020-10-15 23:04:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:48,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143865512] [2020-10-15 23:04:48,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:48,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:48,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563763106] [2020-10-15 23:04:48,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:48,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:48,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:48,099 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-15 23:04:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:48,250 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-15 23:04:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:48,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:04:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:48,282 INFO L225 Difference]: With dead ends: 3204 [2020-10-15 23:04:48,283 INFO L226 Difference]: Without dead ends: 3194 [2020-10-15 23:04:48,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-15 23:04:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-15 23:04:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-15 23:04:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-15 23:04:48,417 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-15 23:04:48,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:48,418 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-15 23:04:48,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-15 23:04:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:04:48,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:48,419 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:48,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 23:04:48,420 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-10-15 23:04:48,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:48,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757918590] [2020-10-15 23:04:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:48,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757918590] [2020-10-15 23:04:48,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802674871] [2020-10-15 23:04:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:48,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:04:48,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:48,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:48,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:04:48,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683278722] [2020-10-15 23:04:48,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:04:48,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:48,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:04:48,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:04:48,670 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-10-15 23:04:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:49,071 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-15 23:04:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:49,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:04:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:49,122 INFO L225 Difference]: With dead ends: 4556 [2020-10-15 23:04:49,123 INFO L226 Difference]: Without dead ends: 4546 [2020-10-15 23:04:49,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:04:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-15 23:04:49,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-15 23:04:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-15 23:04:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-15 23:04:49,292 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-15 23:04:49,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:49,293 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-15 23:04:49,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:04:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-15 23:04:49,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:04:49,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:49,295 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:49,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-15 23:04:49,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:49,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-10-15 23:04:49,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:49,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863733387] [2020-10-15 23:04:49,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:49,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863733387] [2020-10-15 23:04:49,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:49,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:04:49,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481810946] [2020-10-15 23:04:49,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:04:49,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:49,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:04:49,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:49,615 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-15 23:04:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:49,988 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-15 23:04:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:49,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:04:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:50,019 INFO L225 Difference]: With dead ends: 4612 [2020-10-15 23:04:50,019 INFO L226 Difference]: Without dead ends: 4601 [2020-10-15 23:04:50,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:04:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-15 23:04:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-15 23:04:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-15 23:04:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-15 23:04:50,159 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-15 23:04:50,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:50,160 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-15 23:04:50,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:04:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-15 23:04:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:04:50,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:50,162 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:50,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 23:04:50,162 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:50,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-10-15 23:04:50,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:50,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053639429] [2020-10-15 23:04:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:04:50,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053639429] [2020-10-15 23:04:50,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:50,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:04:50,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152989873] [2020-10-15 23:04:50,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:04:50,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:50,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:04:50,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:04:50,244 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-15 23:04:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:50,386 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-15 23:04:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:04:50,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:04:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:50,406 INFO L225 Difference]: With dead ends: 3265 [2020-10-15 23:04:50,406 INFO L226 Difference]: Without dead ends: 3250 [2020-10-15 23:04:50,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-15 23:04:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-15 23:04:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-15 23:04:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-15 23:04:50,527 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-15 23:04:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:50,528 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-15 23:04:50,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:04:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-15 23:04:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:04:50,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:50,530 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:50,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 23:04:50,531 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:50,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:50,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-10-15 23:04:50,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:50,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083099061] [2020-10-15 23:04:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:04:50,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083099061] [2020-10-15 23:04:50,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813883663] [2020-10-15 23:04:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:50,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:04:50,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:04:50,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:50,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:04:50,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407989895] [2020-10-15 23:04:50,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:04:50,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:50,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:04:50,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:04:50,765 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-10-15 23:04:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:51,202 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-15 23:04:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:51,203 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:04:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:51,230 INFO L225 Difference]: With dead ends: 4825 [2020-10-15 23:04:51,230 INFO L226 Difference]: Without dead ends: 4813 [2020-10-15 23:04:51,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:04:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-15 23:04:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-15 23:04:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-15 23:04:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-15 23:04:51,380 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-15 23:04:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:51,381 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-15 23:04:51,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:04:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-15 23:04:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:04:51,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:51,383 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:51,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:51,598 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:51,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:51,598 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-10-15 23:04:51,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:51,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338208235] [2020-10-15 23:04:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:51,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338208235] [2020-10-15 23:04:51,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323736164] [2020-10-15 23:04:51,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:51,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:04:51,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:51,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:51,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:04:51,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990289485] [2020-10-15 23:04:51,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:04:51,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:04:51,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:04:51,901 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-10-15 23:04:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:52,360 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-15 23:04:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:52,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:04:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:52,376 INFO L225 Difference]: With dead ends: 4942 [2020-10-15 23:04:52,376 INFO L226 Difference]: Without dead ends: 4925 [2020-10-15 23:04:52,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:04:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-15 23:04:52,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-15 23:04:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-15 23:04:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-15 23:04:52,510 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-15 23:04:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:52,510 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-15 23:04:52,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:04:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-15 23:04:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:04:52,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:52,512 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:52,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:52,728 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:52,728 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-10-15 23:04:52,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:52,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938750108] [2020-10-15 23:04:52,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:04:52,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938750108] [2020-10-15 23:04:52,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:52,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:04:52,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242597397] [2020-10-15 23:04:52,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:04:52,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:52,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:04:52,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:52,796 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-15 23:04:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:53,202 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-15 23:04:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:53,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:04:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:53,219 INFO L225 Difference]: With dead ends: 4934 [2020-10-15 23:04:53,220 INFO L226 Difference]: Without dead ends: 4917 [2020-10-15 23:04:53,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:04:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-15 23:04:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-15 23:04:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-15 23:04:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-15 23:04:53,368 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-15 23:04:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:53,369 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-15 23:04:53,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:04:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-15 23:04:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:04:53,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:53,372 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:53,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 23:04:53,372 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:53,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-10-15 23:04:53,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:53,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961465906] [2020-10-15 23:04:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:04:53,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961465906] [2020-10-15 23:04:53,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:04:53,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:04:53,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548831941] [2020-10-15 23:04:53,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:04:53,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:04:53,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:04:53,444 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-15 23:04:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:53,781 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-15 23:04:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:04:53,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:04:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:53,792 INFO L225 Difference]: With dead ends: 4774 [2020-10-15 23:04:53,792 INFO L226 Difference]: Without dead ends: 4757 [2020-10-15 23:04:53,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:04:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-15 23:04:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-15 23:04:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-15 23:04:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-15 23:04:53,879 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-15 23:04:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:53,879 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-15 23:04:53,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:04:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-15 23:04:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:04:53,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:53,881 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:53,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 23:04:53,881 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:53,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-10-15 23:04:53,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:53,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351013729] [2020-10-15 23:04:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:53,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351013729] [2020-10-15 23:04:53,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974957648] [2020-10-15 23:04:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:54,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:04:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:54,354 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-15 23:04:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:04:54,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:54,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:04:54,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492919611] [2020-10-15 23:04:54,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:04:54,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:04:54,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:04:54,395 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-10-15 23:04:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:55,598 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-15 23:04:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:04:55,600 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:04:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:55,612 INFO L225 Difference]: With dead ends: 6025 [2020-10-15 23:04:55,613 INFO L226 Difference]: Without dead ends: 6017 [2020-10-15 23:04:55,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:04:55,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-15 23:04:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-15 23:04:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-15 23:04:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-15 23:04:55,712 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-15 23:04:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:55,712 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-15 23:04:55,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:04:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-15 23:04:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:04:55,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:55,715 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:55,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-15 23:04:55,927 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:55,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:55,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-10-15 23:04:55,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:55,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822169260] [2020-10-15 23:04:55,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:04:56,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822169260] [2020-10-15 23:04:56,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769315679] [2020-10-15 23:04:56,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:56,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:04:56,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:04:56,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:04:56,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:04:56,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:56,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:04:56,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401809539] [2020-10-15 23:04:56,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:04:56,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:56,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:04:56,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:04:56,287 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-10-15 23:04:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:57,325 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-15 23:04:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:04:57,326 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:04:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:57,341 INFO L225 Difference]: With dead ends: 5914 [2020-10-15 23:04:57,341 INFO L226 Difference]: Without dead ends: 5903 [2020-10-15 23:04:57,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:04:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-15 23:04:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-15 23:04:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-15 23:04:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-15 23:04:57,546 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-15 23:04:57,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:57,547 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-15 23:04:57,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:04:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-15 23:04:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:04:57,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:57,549 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:57,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:57,763 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:57,763 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-10-15 23:04:57,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:57,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888549948] [2020-10-15 23:04:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:57,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888549948] [2020-10-15 23:04:57,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558774309] [2020-10-15 23:04:57,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:57,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:04:57,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:04:57,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:04:57,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:58,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:58,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:04:58,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074493655] [2020-10-15 23:04:58,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:04:58,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:58,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:04:58,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:04:58,108 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-10-15 23:04:59,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:04:59,063 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-15 23:04:59,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:04:59,064 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:04:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:04:59,081 INFO L225 Difference]: With dead ends: 5907 [2020-10-15 23:04:59,081 INFO L226 Difference]: Without dead ends: 5899 [2020-10-15 23:04:59,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:04:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-15 23:04:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-15 23:04:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-15 23:04:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-15 23:04:59,198 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-15 23:04:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:04:59,199 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-15 23:04:59,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:04:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-15 23:04:59,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:04:59,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:04:59,202 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:04:59,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-15 23:04:59,416 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:04:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:04:59,416 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-10-15 23:04:59,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:04:59,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736044271] [2020-10-15 23:04:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:04:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:04:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:59,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736044271] [2020-10-15 23:04:59,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860485081] [2020-10-15 23:04:59,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:04:59,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:04:59,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:04:59,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:04:59,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:04:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:04:59,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:04:59,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:04:59,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280023724] [2020-10-15 23:04:59,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:04:59,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:04:59,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:04:59,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:04:59,742 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-10-15 23:05:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:00,744 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-15 23:05:00,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:00,745 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:05:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:00,760 INFO L225 Difference]: With dead ends: 5835 [2020-10-15 23:05:00,761 INFO L226 Difference]: Without dead ends: 5824 [2020-10-15 23:05:00,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-15 23:05:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-15 23:05:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-15 23:05:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-15 23:05:00,971 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-15 23:05:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:00,972 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-15 23:05:00,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:00,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-15 23:05:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:00,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:00,978 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:01,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-15 23:05:01,185 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:05:01,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:01,185 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-10-15 23:05:01,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:01,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727291287] [2020-10-15 23:05:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:05:01,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727291287] [2020-10-15 23:05:01,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:01,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:05:01,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675445888] [2020-10-15 23:05:01,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:05:01,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:01,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:05:01,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:05:01,321 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-10-15 23:05:02,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:02,168 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-10-15 23:05:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:02,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:05:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:02,203 INFO L225 Difference]: With dead ends: 5820 [2020-10-15 23:05:02,203 INFO L226 Difference]: Without dead ends: 5812 [2020-10-15 23:05:02,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:05:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-10-15 23:05:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-10-15 23:05:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-15 23:05:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-10-15 23:05:02,315 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-10-15 23:05:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:02,316 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-10-15 23:05:02,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:05:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-10-15 23:05:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:02,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:02,318 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:02,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 23:05:02,319 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:05:02,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:02,319 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-10-15 23:05:02,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:02,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931136429] [2020-10-15 23:05:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:05:02,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931136429] [2020-10-15 23:05:02,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:02,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:05:02,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604127281] [2020-10-15 23:05:02,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:05:02,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:02,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:05:02,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:05:02,424 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-10-15 23:05:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:03,301 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-10-15 23:05:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:03,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:05:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:03,313 INFO L225 Difference]: With dead ends: 5717 [2020-10-15 23:05:03,313 INFO L226 Difference]: Without dead ends: 5705 [2020-10-15 23:05:03,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:05:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-15 23:05:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-10-15 23:05:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-15 23:05:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-10-15 23:05:03,419 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-10-15 23:05:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:03,420 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-10-15 23:05:03,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:05:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-10-15 23:05:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:03,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:03,422 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:03,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 23:05:03,423 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:05:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:03,423 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-10-15 23:05:03,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:03,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82873789] [2020-10-15 23:05:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:05:03,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82873789] [2020-10-15 23:05:03,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:03,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:05:03,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055579243] [2020-10-15 23:05:03,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:05:03,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:05:03,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:05:03,467 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-10-15 23:05:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:03,586 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-10-15 23:05:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:05:03,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 23:05:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:03,594 INFO L225 Difference]: With dead ends: 2762 [2020-10-15 23:05:03,594 INFO L226 Difference]: Without dead ends: 2746 [2020-10-15 23:05:03,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-10-15 23:05:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-10-15 23:05:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-15 23:05:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-15 23:05:03,670 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-15 23:05:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:03,671 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-15 23:05:03,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:05:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-15 23:05:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 23:05:03,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:03,673 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:03,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 23:05:03,673 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 23:05:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:03,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-10-15 23:05:03,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:03,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390133803] [2020-10-15 23:05:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:05:03,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:05:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:05:03,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:05:03,705 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:05:03,705 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:05:03,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 23:05:03,706 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:05:03,706 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:05:03,707 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 23:05:03,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,723 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,723 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,724 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,724 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,725 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,725 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,725 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,726 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,726 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,738 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,738 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,744 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,745 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,747 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,747 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,748 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,751 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,751 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,753 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,753 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,754 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,754 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,762 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:05:03,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-15 23:05:03,767 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:05:03,767 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:05:03,767 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:05:03,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:05:03,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:05:03,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:05:03,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:05:03,768 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:05:03,769 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:05:03,769 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-15 23:05:03,769 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 122 transitions, 334 flow [2020-10-15 23:05:03,769 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-15 23:05:03,788 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-15 23:05:03,788 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-15 23:05:03,791 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-15 23:05:03,797 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-15 23:05:05,997 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-15 23:05:06,289 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-15 23:05:06,528 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-15 23:05:06,621 INFO L132 LiptonReduction]: Checked pairs total: 4038 [2020-10-15 23:05:06,621 INFO L134 LiptonReduction]: Total number of compositions: 111 [2020-10-15 23:05:06,621 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-15 23:05:07,080 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-15 23:05:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-15 23:05:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:05:07,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:07,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:05:07,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:07,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-10-15 23:05:07,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:07,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897357380] [2020-10-15 23:05:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:05:07,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897357380] [2020-10-15 23:05:07,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:07,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:05:07,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577992395] [2020-10-15 23:05:07,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:05:07,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:07,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:05:07,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:05:07,111 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-15 23:05:07,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:07,210 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-15 23:05:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:05:07,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:05:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:07,232 INFO L225 Difference]: With dead ends: 5844 [2020-10-15 23:05:07,232 INFO L226 Difference]: Without dead ends: 5479 [2020-10-15 23:05:07,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:05:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-15 23:05:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-15 23:05:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-15 23:05:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-15 23:05:07,613 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-15 23:05:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:07,613 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-15 23:05:07,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:05:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-15 23:05:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:05:07,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:07,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:07,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 23:05:07,615 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:07,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:07,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-10-15 23:05:07,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:07,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144529891] [2020-10-15 23:05:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:05:07,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144529891] [2020-10-15 23:05:07,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:07,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:05:07,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393084174] [2020-10-15 23:05:07,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:05:07,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:05:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:05:07,677 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-15 23:05:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:07,863 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-15 23:05:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:05:07,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:05:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:07,897 INFO L225 Difference]: With dead ends: 9673 [2020-10-15 23:05:07,897 INFO L226 Difference]: Without dead ends: 9666 [2020-10-15 23:05:07,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:07,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-15 23:05:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-15 23:05:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-15 23:05:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-15 23:05:08,173 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-15 23:05:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:08,173 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-15 23:05:08,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:05:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-15 23:05:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:05:08,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:08,174 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:08,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 23:05:08,174 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-10-15 23:05:08,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:08,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562743467] [2020-10-15 23:05:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:08,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562743467] [2020-10-15 23:05:08,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:08,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:05:08,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969415591] [2020-10-15 23:05:08,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:05:08,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:05:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:05:08,236 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-15 23:05:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:08,431 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-15 23:05:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:05:08,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:05:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:08,469 INFO L225 Difference]: With dead ends: 11081 [2020-10-15 23:05:08,469 INFO L226 Difference]: Without dead ends: 11068 [2020-10-15 23:05:08,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-15 23:05:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-15 23:05:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-15 23:05:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-15 23:05:08,760 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-15 23:05:08,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:08,760 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-15 23:05:08,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:05:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-15 23:05:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:05:08,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:08,761 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:08,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 23:05:08,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-10-15 23:05:08,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:08,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718195429] [2020-10-15 23:05:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:05:08,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718195429] [2020-10-15 23:05:08,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975347305] [2020-10-15 23:05:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:08,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:05:08,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:05:08,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:08,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:05:08,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940555266] [2020-10-15 23:05:08,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:05:08,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:08,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:05:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:05:08,987 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-10-15 23:05:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:09,681 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-15 23:05:09,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:09,681 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:05:09,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:09,736 INFO L225 Difference]: With dead ends: 16749 [2020-10-15 23:05:09,737 INFO L226 Difference]: Without dead ends: 16736 [2020-10-15 23:05:09,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:05:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-15 23:05:10,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-15 23:05:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-15 23:05:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-15 23:05:10,089 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-15 23:05:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:10,089 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-15 23:05:10,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:05:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-15 23:05:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:05:10,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:10,090 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:10,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:10,291 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:10,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-10-15 23:05:10,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:10,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79294503] [2020-10-15 23:05:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:10,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79294503] [2020-10-15 23:05:10,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:10,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:05:10,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623682108] [2020-10-15 23:05:10,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:05:10,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:10,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:05:10,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:10,358 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-15 23:05:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:10,844 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-15 23:05:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:10,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:05:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:10,916 INFO L225 Difference]: With dead ends: 17085 [2020-10-15 23:05:10,916 INFO L226 Difference]: Without dead ends: 17071 [2020-10-15 23:05:10,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:05:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-15 23:05:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-15 23:05:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-15 23:05:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-15 23:05:11,323 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-15 23:05:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:11,323 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-15 23:05:11,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:05:11,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-15 23:05:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:05:11,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:11,325 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:11,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 23:05:11,325 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:11,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:11,326 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-10-15 23:05:11,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:11,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792009487] [2020-10-15 23:05:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:05:11,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792009487] [2020-10-15 23:05:11,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:11,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:05:11,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771193087] [2020-10-15 23:05:11,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:05:11,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:11,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:05:11,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:05:11,376 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-15 23:05:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:11,638 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-15 23:05:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:05:11,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:05:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:11,714 INFO L225 Difference]: With dead ends: 12234 [2020-10-15 23:05:11,714 INFO L226 Difference]: Without dead ends: 12212 [2020-10-15 23:05:11,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-15 23:05:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-15 23:05:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-15 23:05:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-15 23:05:13,226 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-15 23:05:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:13,226 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-15 23:05:13,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:05:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-15 23:05:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:05:13,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:13,235 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:13,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 23:05:13,236 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:13,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-10-15 23:05:13,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:13,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291986135] [2020-10-15 23:05:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:05:13,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291986135] [2020-10-15 23:05:13,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241224804] [2020-10-15 23:05:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:13,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:05:13,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:05:13,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:13,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:05:13,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115160861] [2020-10-15 23:05:13,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:05:13,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:13,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:05:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:05:13,569 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-10-15 23:05:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:14,052 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-15 23:05:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:14,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:05:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:14,118 INFO L225 Difference]: With dead ends: 19016 [2020-10-15 23:05:14,119 INFO L226 Difference]: Without dead ends: 18998 [2020-10-15 23:05:14,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:05:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-15 23:05:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-15 23:05:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-15 23:05:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-15 23:05:14,548 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-15 23:05:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:14,548 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-15 23:05:14,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:05:14,548 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-15 23:05:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:05:14,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:14,549 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:14,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-15 23:05:14,751 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:14,752 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-10-15 23:05:14,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:14,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651320750] [2020-10-15 23:05:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:14,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651320750] [2020-10-15 23:05:14,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292438525] [2020-10-15 23:05:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:14,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:05:14,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:14,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:14,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:05:14,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884313036] [2020-10-15 23:05:14,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:05:14,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:05:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:05:14,966 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-10-15 23:05:15,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:15,537 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-15 23:05:15,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:15,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:05:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:15,654 INFO L225 Difference]: With dead ends: 19670 [2020-10-15 23:05:15,654 INFO L226 Difference]: Without dead ends: 19645 [2020-10-15 23:05:15,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:05:16,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-15 23:05:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-15 23:05:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-15 23:05:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-15 23:05:16,469 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-15 23:05:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:16,470 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-15 23:05:16,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:05:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-15 23:05:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:05:16,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:16,472 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:16,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-15 23:05:16,673 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-10-15 23:05:16,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:16,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878400464] [2020-10-15 23:05:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:05:16,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878400464] [2020-10-15 23:05:16,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:16,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:05:16,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49672528] [2020-10-15 23:05:16,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:05:16,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:16,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:05:16,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:16,736 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-15 23:05:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:17,226 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-15 23:05:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:17,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:05:17,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:17,300 INFO L225 Difference]: With dead ends: 19852 [2020-10-15 23:05:17,300 INFO L226 Difference]: Without dead ends: 19827 [2020-10-15 23:05:17,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:05:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-15 23:05:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-15 23:05:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-15 23:05:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-15 23:05:17,761 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-15 23:05:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:17,761 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-15 23:05:17,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:05:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-15 23:05:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:05:17,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:17,763 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:17,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 23:05:17,764 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:17,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:17,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-10-15 23:05:17,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:17,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653899552] [2020-10-15 23:05:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:05:17,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653899552] [2020-10-15 23:05:17,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:17,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:05:17,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662026233] [2020-10-15 23:05:17,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:05:17,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:17,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:05:17,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:17,834 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-15 23:05:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:18,293 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-15 23:05:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:18,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:05:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:18,378 INFO L225 Difference]: With dead ends: 19555 [2020-10-15 23:05:18,379 INFO L226 Difference]: Without dead ends: 19530 [2020-10-15 23:05:18,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:05:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-15 23:05:19,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-15 23:05:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-15 23:05:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-15 23:05:19,054 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-15 23:05:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:19,055 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-15 23:05:19,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:05:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-15 23:05:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:19,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:19,056 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:19,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 23:05:19,056 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:19,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-10-15 23:05:19,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:19,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760685247] [2020-10-15 23:05:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:05:19,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760685247] [2020-10-15 23:05:19,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248232309] [2020-10-15 23:05:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:19,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:19,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:05:19,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:19,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:19,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405426527] [2020-10-15 23:05:19,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:19,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:19,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:19,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:19,346 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-10-15 23:05:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:20,639 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-15 23:05:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:20,640 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:05:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:20,751 INFO L225 Difference]: With dead ends: 26969 [2020-10-15 23:05:20,751 INFO L226 Difference]: Without dead ends: 26957 [2020-10-15 23:05:20,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-15 23:05:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-15 23:05:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-15 23:05:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-15 23:05:21,310 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-15 23:05:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:21,310 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-15 23:05:21,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-15 23:05:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:21,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:21,312 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:21,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:21,514 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-10-15 23:05:21,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:21,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683683463] [2020-10-15 23:05:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:05:21,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683683463] [2020-10-15 23:05:21,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654489273] [2020-10-15 23:05:21,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:21,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:05:21,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:05:21,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:21,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:05:21,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:21,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:21,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115796378] [2020-10-15 23:05:21,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:21,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:21,874 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-10-15 23:05:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:23,305 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-15 23:05:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:23,306 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:05:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:23,421 INFO L225 Difference]: With dead ends: 26661 [2020-10-15 23:05:23,422 INFO L226 Difference]: Without dead ends: 26645 [2020-10-15 23:05:23,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-15 23:05:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-15 23:05:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-15 23:05:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-15 23:05:24,001 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-15 23:05:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:24,001 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-15 23:05:24,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-15 23:05:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:24,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:24,003 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:24,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-15 23:05:24,204 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:24,205 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-10-15 23:05:24,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:24,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269127310] [2020-10-15 23:05:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:24,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269127310] [2020-10-15 23:05:24,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786790422] [2020-10-15 23:05:24,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:24,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:05:24,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:05:24,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:24,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:24,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:24,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:24,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887643180] [2020-10-15 23:05:24,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:24,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:24,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:24,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:24,524 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-10-15 23:05:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:25,740 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-15 23:05:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:25,740 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:05:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:25,855 INFO L225 Difference]: With dead ends: 26686 [2020-10-15 23:05:25,856 INFO L226 Difference]: Without dead ends: 26674 [2020-10-15 23:05:25,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:26,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-15 23:05:26,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-15 23:05:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-15 23:05:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-15 23:05:26,417 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-15 23:05:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:26,417 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-15 23:05:26,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-15 23:05:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:26,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:26,419 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:26,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:26,620 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-10-15 23:05:26,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:26,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850697307] [2020-10-15 23:05:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:26,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850697307] [2020-10-15 23:05:26,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623538025] [2020-10-15 23:05:26,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:26,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:05:26,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:05:26,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:26,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:05:26,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:26,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:26,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572241702] [2020-10-15 23:05:26,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:26,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:26,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:26,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:26,913 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-10-15 23:05:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:28,504 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-15 23:05:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:28,506 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:05:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:28,673 INFO L225 Difference]: With dead ends: 26489 [2020-10-15 23:05:28,674 INFO L226 Difference]: Without dead ends: 26473 [2020-10-15 23:05:28,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-15 23:05:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-15 23:05:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-15 23:05:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-15 23:05:29,518 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-15 23:05:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:29,518 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-15 23:05:29,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-15 23:05:29,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:29,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:29,521 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:29,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-15 23:05:29,738 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:29,738 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-10-15 23:05:29,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:29,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47335955] [2020-10-15 23:05:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:05:29,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47335955] [2020-10-15 23:05:29,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:29,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:05:29,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932675865] [2020-10-15 23:05:29,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:05:29,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:29,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:05:29,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:05:29,786 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-15 23:05:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:30,005 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-15 23:05:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:05:30,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 23:05:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:30,063 INFO L225 Difference]: With dead ends: 13251 [2020-10-15 23:05:30,064 INFO L226 Difference]: Without dead ends: 13220 [2020-10-15 23:05:30,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-15 23:05:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-15 23:05:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-15 23:05:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-15 23:05:30,478 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-15 23:05:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:30,478 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-15 23:05:30,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:05:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-15 23:05:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:30,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:30,480 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:30,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-15 23:05:30,480 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:30,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-10-15 23:05:30,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:30,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526620091] [2020-10-15 23:05:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:05:30,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526620091] [2020-10-15 23:05:30,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:30,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:05:30,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958050497] [2020-10-15 23:05:30,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:05:30,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:30,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:05:30,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:05:30,575 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-15 23:05:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:31,708 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-15 23:05:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:31,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:05:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:31,838 INFO L225 Difference]: With dead ends: 29788 [2020-10-15 23:05:31,838 INFO L226 Difference]: Without dead ends: 29770 [2020-10-15 23:05:31,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:05:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-15 23:05:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-15 23:05:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-15 23:05:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-15 23:05:32,803 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-15 23:05:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:32,803 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-15 23:05:32,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:05:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-15 23:05:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:05:32,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:32,806 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:32,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-15 23:05:32,806 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-10-15 23:05:32,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:32,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760822576] [2020-10-15 23:05:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:05:32,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760822576] [2020-10-15 23:05:32,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:32,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:05:32,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156921533] [2020-10-15 23:05:32,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:05:32,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:32,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:05:32,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:05:32,910 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-15 23:05:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:34,174 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-15 23:05:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:34,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:05:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:34,292 INFO L225 Difference]: With dead ends: 29379 [2020-10-15 23:05:34,292 INFO L226 Difference]: Without dead ends: 29356 [2020-10-15 23:05:34,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:05:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-15 23:05:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-15 23:05:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-15 23:05:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-15 23:05:34,969 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-15 23:05:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:34,969 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-15 23:05:34,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:05:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-15 23:05:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:05:34,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:34,972 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:34,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-15 23:05:34,972 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-10-15 23:05:34,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:34,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164665712] [2020-10-15 23:05:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:35,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164665712] [2020-10-15 23:05:35,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318734242] [2020-10-15 23:05:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:35,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:05:35,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:35,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:35,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:05:35,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658321343] [2020-10-15 23:05:35,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:05:35,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:35,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:05:35,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:05:35,207 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-10-15 23:05:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:35,744 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-15 23:05:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:35,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:05:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:35,825 INFO L225 Difference]: With dead ends: 19727 [2020-10-15 23:05:35,825 INFO L226 Difference]: Without dead ends: 19703 [2020-10-15 23:05:35,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:05:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-15 23:05:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-15 23:05:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-15 23:05:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-15 23:05:36,303 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-15 23:05:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:36,304 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-15 23:05:36,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:05:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-15 23:05:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:05:36,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:36,307 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:36,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-15 23:05:36,515 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:36,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:36,516 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-10-15 23:05:36,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:36,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741753915] [2020-10-15 23:05:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:05:36,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741753915] [2020-10-15 23:05:36,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986492032] [2020-10-15 23:05:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:36,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:05:36,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:05:36,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:36,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:05:36,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131534009] [2020-10-15 23:05:36,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:05:36,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:36,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:05:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:05:36,764 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-10-15 23:05:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:37,314 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-15 23:05:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:37,315 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:05:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:37,396 INFO L225 Difference]: With dead ends: 20694 [2020-10-15 23:05:37,397 INFO L226 Difference]: Without dead ends: 20666 [2020-10-15 23:05:37,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:05:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-15 23:05:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-15 23:05:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-15 23:05:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-15 23:05:38,115 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-15 23:05:38,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:38,115 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-15 23:05:38,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:05:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-15 23:05:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:05:38,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:38,119 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:38,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:38,326 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-10-15 23:05:38,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:38,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008672580] [2020-10-15 23:05:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:38,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008672580] [2020-10-15 23:05:38,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880363225] [2020-10-15 23:05:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:38,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:05:38,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:38,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:38,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:05:38,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444942775] [2020-10-15 23:05:38,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:05:38,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:38,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:05:38,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:05:38,548 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-10-15 23:05:39,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:39,112 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-15 23:05:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:39,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:05:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:39,208 INFO L225 Difference]: With dead ends: 21396 [2020-10-15 23:05:39,208 INFO L226 Difference]: Without dead ends: 21359 [2020-10-15 23:05:39,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:05:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-15 23:05:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-15 23:05:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-15 23:05:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-15 23:05:39,674 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-15 23:05:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:39,674 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-15 23:05:39,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:05:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-15 23:05:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:05:39,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:39,678 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:39,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-15 23:05:39,889 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:39,889 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-10-15 23:05:39,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:39,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968511317] [2020-10-15 23:05:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:05:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968511317] [2020-10-15 23:05:39,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:39,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:05:39,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740632827] [2020-10-15 23:05:39,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:05:39,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:39,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:05:39,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:39,951 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-15 23:05:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:40,436 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-15 23:05:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:40,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:05:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:40,518 INFO L225 Difference]: With dead ends: 21489 [2020-10-15 23:05:40,518 INFO L226 Difference]: Without dead ends: 21452 [2020-10-15 23:05:40,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:05:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-15 23:05:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-15 23:05:40,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-15 23:05:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-15 23:05:41,001 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-15 23:05:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:41,002 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-15 23:05:41,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:05:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-15 23:05:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:05:41,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:41,006 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:41,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-15 23:05:41,007 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:41,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:41,007 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-10-15 23:05:41,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:41,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915549913] [2020-10-15 23:05:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:05:41,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915549913] [2020-10-15 23:05:41,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:41,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:05:41,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72945959] [2020-10-15 23:05:41,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:05:41,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:05:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:41,078 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-15 23:05:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:41,602 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-10-15 23:05:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:41,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:05:41,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:41,690 INFO L225 Difference]: With dead ends: 21198 [2020-10-15 23:05:41,690 INFO L226 Difference]: Without dead ends: 21161 [2020-10-15 23:05:41,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:05:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-10-15 23:05:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-10-15 23:05:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-15 23:05:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-15 23:05:42,493 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-15 23:05:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:42,493 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-15 23:05:42,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:05:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-15 23:05:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:05:42,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:42,497 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:42,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-15 23:05:42,497 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:42,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:42,498 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-10-15 23:05:42,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:42,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835564166] [2020-10-15 23:05:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:05:42,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835564166] [2020-10-15 23:05:42,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:05:42,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:05:42,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595137984] [2020-10-15 23:05:42,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:05:42,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:42,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:05:42,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:05:42,553 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-15 23:05:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:43,030 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-10-15 23:05:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:05:43,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:05:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:43,109 INFO L225 Difference]: With dead ends: 21067 [2020-10-15 23:05:43,109 INFO L226 Difference]: Without dead ends: 21030 [2020-10-15 23:05:43,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:05:43,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-10-15 23:05:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-10-15 23:05:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-15 23:05:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-15 23:05:43,583 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-15 23:05:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:43,584 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-15 23:05:43,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:05:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-15 23:05:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:05:43,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:43,588 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:43,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-15 23:05:43,588 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:43,589 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-10-15 23:05:43,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:43,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645326694] [2020-10-15 23:05:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:05:43,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645326694] [2020-10-15 23:05:43,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56237100] [2020-10-15 23:05:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:43,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:43,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:05:43,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:43,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:43,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297759234] [2020-10-15 23:05:43,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:43,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:43,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:43,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:43,877 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-10-15 23:05:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:45,273 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-15 23:05:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:45,274 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:05:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:45,387 INFO L225 Difference]: With dead ends: 30145 [2020-10-15 23:05:45,388 INFO L226 Difference]: Without dead ends: 30125 [2020-10-15 23:05:45,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:45,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-15 23:05:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-15 23:05:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-15 23:05:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-15 23:05:46,007 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-15 23:05:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:46,008 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-15 23:05:46,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-15 23:05:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:05:46,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:46,013 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:46,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-15 23:05:46,214 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-10-15 23:05:46,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:46,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173961136] [2020-10-15 23:05:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:05:46,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173961136] [2020-10-15 23:05:46,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739583450] [2020-10-15 23:05:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:46,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:46,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:05:46,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:46,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:46,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675128115] [2020-10-15 23:05:46,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:46,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:46,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:46,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:46,558 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-10-15 23:05:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:47,780 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-15 23:05:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:47,780 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:05:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:47,903 INFO L225 Difference]: With dead ends: 29696 [2020-10-15 23:05:47,903 INFO L226 Difference]: Without dead ends: 29676 [2020-10-15 23:05:47,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-15 23:05:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-15 23:05:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-15 23:05:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-15 23:05:48,775 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-15 23:05:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:48,775 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-15 23:05:48,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-15 23:05:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:05:48,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:48,780 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:48,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-15 23:05:48,981 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:48,982 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-10-15 23:05:48,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:48,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95097993] [2020-10-15 23:05:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:49,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95097993] [2020-10-15 23:05:49,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105910394] [2020-10-15 23:05:49,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:49,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:05:49,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:05:49,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:49,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:49,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:49,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:49,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536870338] [2020-10-15 23:05:49,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:49,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:49,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:49,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:49,288 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-10-15 23:05:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:50,544 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-15 23:05:50,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:50,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:05:50,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:50,657 INFO L225 Difference]: With dead ends: 29267 [2020-10-15 23:05:50,657 INFO L226 Difference]: Without dead ends: 29245 [2020-10-15 23:05:50,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-15 23:05:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-15 23:05:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-15 23:05:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-15 23:05:51,255 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-15 23:05:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:51,256 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-15 23:05:51,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-15 23:05:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:05:51,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:51,262 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:51,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-15 23:05:51,474 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:51,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:51,475 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-10-15 23:05:51,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:51,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907779855] [2020-10-15 23:05:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:51,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907779855] [2020-10-15 23:05:51,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597666160] [2020-10-15 23:05:51,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:51,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:05:51,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:05:51,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:51,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:05:51,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:51,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:51,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268168208] [2020-10-15 23:05:51,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:51,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:51,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:51,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:51,767 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-10-15 23:05:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:53,205 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-15 23:05:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:53,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:05:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:53,323 INFO L225 Difference]: With dead ends: 28920 [2020-10-15 23:05:53,323 INFO L226 Difference]: Without dead ends: 28898 [2020-10-15 23:05:53,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-15 23:05:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-15 23:05:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-15 23:05:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-15 23:05:53,942 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-15 23:05:53,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:53,942 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-15 23:05:53,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-15 23:05:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:05:53,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:53,947 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:54,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:54,148 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-10-15 23:05:54,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:54,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969092035] [2020-10-15 23:05:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 23:05:54,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969092035] [2020-10-15 23:05:54,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712941926] [2020-10-15 23:05:54,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:54,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:05:54,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:05:54,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:54,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 23:05:54,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:54,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:54,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609795012] [2020-10-15 23:05:54,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:54,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:54,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:54,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:54,466 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-10-15 23:05:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:55,722 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-15 23:05:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:55,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:05:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:56,086 INFO L225 Difference]: With dead ends: 29038 [2020-10-15 23:05:56,086 INFO L226 Difference]: Without dead ends: 29018 [2020-10-15 23:05:56,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:56,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-15 23:05:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-15 23:05:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-15 23:05:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-15 23:05:56,666 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-15 23:05:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:56,666 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-15 23:05:56,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-15 23:05:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:05:56,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:56,672 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:56,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-15 23:05:56,873 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-10-15 23:05:56,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:56,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913645285] [2020-10-15 23:05:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:05:56,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913645285] [2020-10-15 23:05:56,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496860114] [2020-10-15 23:05:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:57,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:57,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 23:05:57,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:57,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:57,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078306701] [2020-10-15 23:05:57,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:57,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:57,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:57,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:57,171 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-10-15 23:05:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:05:58,609 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-10-15 23:05:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:05:58,610 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:05:58,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:05:58,702 INFO L225 Difference]: With dead ends: 29417 [2020-10-15 23:05:58,703 INFO L226 Difference]: Without dead ends: 29397 [2020-10-15 23:05:58,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:05:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-10-15 23:05:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-10-15 23:05:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-15 23:05:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-10-15 23:05:59,281 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-10-15 23:05:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:05:59,281 INFO L481 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-10-15 23:05:59,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:05:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-10-15 23:05:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:05:59,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:05:59,286 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:05:59,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:59,488 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:05:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:05:59,488 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-10-15 23:05:59,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:05:59,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392629775] [2020-10-15 23:05:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:05:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:05:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:05:59,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392629775] [2020-10-15 23:05:59,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923883863] [2020-10-15 23:05:59,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:05:59,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:05:59,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:05:59,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:05:59,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:05:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:05:59,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:05:59,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:05:59,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589455220] [2020-10-15 23:05:59,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:05:59,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:05:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:05:59,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:05:59,891 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-10-15 23:06:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:01,864 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-10-15 23:06:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:01,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:06:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:02,024 INFO L225 Difference]: With dead ends: 29064 [2020-10-15 23:06:02,024 INFO L226 Difference]: Without dead ends: 29037 [2020-10-15 23:06:02,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:06:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-10-15 23:06:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-10-15 23:06:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-15 23:06:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-10-15 23:06:02,855 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-10-15 23:06:02,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:02,855 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-10-15 23:06:02,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:06:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-10-15 23:06:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:02,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:02,860 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:03,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-15 23:06:03,061 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:03,062 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-10-15 23:06:03,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:03,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416903709] [2020-10-15 23:06:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:06:03,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416903709] [2020-10-15 23:06:03,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159931498] [2020-10-15 23:06:03,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:03,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:06:03,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:06:03,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:06:03,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:06:03,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:03,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:06:03,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205337677] [2020-10-15 23:06:03,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:06:03,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:03,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:06:03,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:06:03,362 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-10-15 23:06:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:04,621 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-10-15 23:06:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:04,622 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:06:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:04,742 INFO L225 Difference]: With dead ends: 28523 [2020-10-15 23:06:04,742 INFO L226 Difference]: Without dead ends: 28501 [2020-10-15 23:06:04,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:06:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-10-15 23:06:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-10-15 23:06:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-15 23:06:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-15 23:06:05,536 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-15 23:06:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:05,536 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-15 23:06:05,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:06:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-15 23:06:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:05,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:05,543 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:05,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:05,744 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-10-15 23:06:05,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:05,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637621058] [2020-10-15 23:06:05,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:05,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637621058] [2020-10-15 23:06:05,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491218097] [2020-10-15 23:06:05,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:05,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:06:05,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:06:05,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:06:05,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:06,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:06,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:06:06,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605959644] [2020-10-15 23:06:06,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:06:06,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:06,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:06:06,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:06:06,147 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-10-15 23:06:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:07,449 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-15 23:06:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:07,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:06:07,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:07,553 INFO L225 Difference]: With dead ends: 28636 [2020-10-15 23:06:07,554 INFO L226 Difference]: Without dead ends: 28616 [2020-10-15 23:06:07,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:06:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-15 23:06:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-15 23:06:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-15 23:06:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-15 23:06:08,094 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-15 23:06:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:08,095 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-15 23:06:08,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:06:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-15 23:06:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:08,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:08,098 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:08,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-15 23:06:08,304 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:08,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-10-15 23:06:08,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:08,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173422742] [2020-10-15 23:06:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:08,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173422742] [2020-10-15 23:06:08,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829948340] [2020-10-15 23:06:08,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:08,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:06:08,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:06:08,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:06:08,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:08,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:08,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:06:08,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694137662] [2020-10-15 23:06:08,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:06:08,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:06:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:06:08,636 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-10-15 23:06:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:09,868 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-15 23:06:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:09,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:06:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:09,979 INFO L225 Difference]: With dead ends: 28297 [2020-10-15 23:06:09,979 INFO L226 Difference]: Without dead ends: 28277 [2020-10-15 23:06:09,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:06:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-15 23:06:10,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-15 23:06:10,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-15 23:06:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-15 23:06:10,550 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-15 23:06:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:10,551 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-15 23:06:10,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:06:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-15 23:06:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:10,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:10,554 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:10,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:10,755 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-10-15 23:06:10,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:10,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965028389] [2020-10-15 23:06:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:10,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965028389] [2020-10-15 23:06:10,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579700666] [2020-10-15 23:06:10,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:10,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:06:10,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:06:10,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:06:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:11,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:11,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:06:11,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951166101] [2020-10-15 23:06:11,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:06:11,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:06:11,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:06:11,050 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-10-15 23:06:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:12,487 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-15 23:06:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:12,488 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:06:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:12,599 INFO L225 Difference]: With dead ends: 28565 [2020-10-15 23:06:12,599 INFO L226 Difference]: Without dead ends: 28538 [2020-10-15 23:06:12,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:06:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-15 23:06:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-15 23:06:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-15 23:06:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-15 23:06:13,480 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-15 23:06:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:13,480 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-15 23:06:13,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:06:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-15 23:06:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:13,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:13,485 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:13,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-15 23:06:13,686 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:13,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-10-15 23:06:13,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:13,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182554826] [2020-10-15 23:06:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:13,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182554826] [2020-10-15 23:06:13,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101110077] [2020-10-15 23:06:13,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:13,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:06:13,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:06:13,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:06:13,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 23:06:14,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:14,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:06:14,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087784646] [2020-10-15 23:06:14,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:06:14,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:14,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:06:14,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:06:14,095 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-10-15 23:06:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:16,073 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-15 23:06:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:16,074 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:06:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:16,257 INFO L225 Difference]: With dead ends: 28213 [2020-10-15 23:06:16,258 INFO L226 Difference]: Without dead ends: 28186 [2020-10-15 23:06:16,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:06:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-15 23:06:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-15 23:06:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-15 23:06:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-15 23:06:17,029 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-15 23:06:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:17,030 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-15 23:06:17,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:06:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-15 23:06:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:17,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:17,034 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:17,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:17,235 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:17,236 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-10-15 23:06:17,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:17,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201640211] [2020-10-15 23:06:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:06:17,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201640211] [2020-10-15 23:06:17,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:17,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:06:17,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178188498] [2020-10-15 23:06:17,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:06:17,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:17,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:06:17,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:06:17,331 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-10-15 23:06:18,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:18,569 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-10-15 23:06:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:18,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:06:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:18,690 INFO L225 Difference]: With dead ends: 28226 [2020-10-15 23:06:18,690 INFO L226 Difference]: Without dead ends: 28206 [2020-10-15 23:06:18,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:06:18,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-10-15 23:06:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-10-15 23:06:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-15 23:06:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-10-15 23:06:19,279 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-10-15 23:06:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:19,279 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-10-15 23:06:19,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:06:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-10-15 23:06:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:19,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:19,284 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:19,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-15 23:06:19,284 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:19,285 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-10-15 23:06:19,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:19,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105310243] [2020-10-15 23:06:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:06:19,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105310243] [2020-10-15 23:06:19,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:19,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:06:19,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691066149] [2020-10-15 23:06:19,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:06:19,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:19,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:06:19,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:06:19,366 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-10-15 23:06:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:20,560 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-10-15 23:06:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:20,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:06:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:20,676 INFO L225 Difference]: With dead ends: 27801 [2020-10-15 23:06:20,676 INFO L226 Difference]: Without dead ends: 27781 [2020-10-15 23:06:20,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:06:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-10-15 23:06:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-10-15 23:06:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-10-15 23:06:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-10-15 23:06:21,234 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-10-15 23:06:21,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:21,234 INFO L481 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-10-15 23:06:21,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:06:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-10-15 23:06:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:21,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:21,239 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:21,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-15 23:06:21,239 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:21,239 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-10-15 23:06:21,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:21,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417829650] [2020-10-15 23:06:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:06:21,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417829650] [2020-10-15 23:06:21,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:21,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:06:21,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965451390] [2020-10-15 23:06:21,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:06:21,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:21,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:06:21,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:06:21,341 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-10-15 23:06:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:22,606 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-10-15 23:06:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:22,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:06:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:22,715 INFO L225 Difference]: With dead ends: 27548 [2020-10-15 23:06:22,716 INFO L226 Difference]: Without dead ends: 27521 [2020-10-15 23:06:22,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:06:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-10-15 23:06:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-10-15 23:06:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-10-15 23:06:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-10-15 23:06:23,298 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-10-15 23:06:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:23,299 INFO L481 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-10-15 23:06:23,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:06:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-10-15 23:06:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:23,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:23,304 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:23,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-15 23:06:23,305 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-10-15 23:06:23,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:23,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661886496] [2020-10-15 23:06:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:06:23,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661886496] [2020-10-15 23:06:23,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:23,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:06:23,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034101021] [2020-10-15 23:06:23,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:06:23,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:06:23,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:06:23,407 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-10-15 23:06:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:24,695 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-10-15 23:06:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:24,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:06:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:24,802 INFO L225 Difference]: With dead ends: 27167 [2020-10-15 23:06:24,802 INFO L226 Difference]: Without dead ends: 27147 [2020-10-15 23:06:24,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:06:24,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-10-15 23:06:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-10-15 23:06:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-10-15 23:06:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-10-15 23:06:25,338 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-10-15 23:06:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:25,338 INFO L481 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-10-15 23:06:25,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:06:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-10-15 23:06:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:25,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:25,342 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:25,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-15 23:06:25,343 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:25,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:25,343 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-10-15 23:06:25,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:25,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018235045] [2020-10-15 23:06:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:06:25,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018235045] [2020-10-15 23:06:25,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:25,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:06:25,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819360722] [2020-10-15 23:06:25,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:06:25,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:25,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:06:25,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:06:25,437 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-10-15 23:06:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:26,716 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-10-15 23:06:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:26,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:06:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:26,822 INFO L225 Difference]: With dead ends: 26955 [2020-10-15 23:06:26,822 INFO L226 Difference]: Without dead ends: 26928 [2020-10-15 23:06:26,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:06:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-10-15 23:06:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-10-15 23:06:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-10-15 23:06:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-10-15 23:06:27,357 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-10-15 23:06:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:27,358 INFO L481 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-10-15 23:06:27,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:06:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-10-15 23:06:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:27,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:27,363 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:27,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-15 23:06:27,363 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-10-15 23:06:27,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:27,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957890190] [2020-10-15 23:06:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:06:27,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957890190] [2020-10-15 23:06:27,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:27,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:06:27,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039245117] [2020-10-15 23:06:27,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:06:27,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:27,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:06:27,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:06:27,462 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-10-15 23:06:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:28,799 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-10-15 23:06:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:06:28,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:06:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:28,907 INFO L225 Difference]: With dead ends: 26632 [2020-10-15 23:06:28,907 INFO L226 Difference]: Without dead ends: 26605 [2020-10-15 23:06:28,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:06:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-10-15 23:06:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-10-15 23:06:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-10-15 23:06:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-10-15 23:06:29,432 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-10-15 23:06:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:29,433 INFO L481 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-10-15 23:06:29,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:06:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-10-15 23:06:29,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:06:29,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:29,437 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:29,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-15 23:06:29,437 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-10-15 23:06:29,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:29,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634937698] [2020-10-15 23:06:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:06:29,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634937698] [2020-10-15 23:06:29,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:29,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:06:29,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452450117] [2020-10-15 23:06:29,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:06:29,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:29,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:06:29,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:06:29,486 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-10-15 23:06:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:29,708 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-10-15 23:06:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:06:29,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-15 23:06:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:29,752 INFO L225 Difference]: With dead ends: 11919 [2020-10-15 23:06:29,752 INFO L226 Difference]: Without dead ends: 11887 [2020-10-15 23:06:29,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:06:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-15 23:06:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-10-15 23:06:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-15 23:06:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-15 23:06:30,101 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-15 23:06:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:30,101 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-15 23:06:30,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:06:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-15 23:06:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 23:06:30,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:30,107 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:30,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-15 23:06:30,107 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:30,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-10-15 23:06:30,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:30,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454603155] [2020-10-15 23:06:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:06:30,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:06:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 23:06:30,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 23:06:30,131 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 23:06:30,132 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 23:06:30,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-15 23:06:30,132 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-15 23:06:30,133 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 23:06:30,133 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 23:06:30,159 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,160 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,160 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,161 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,161 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,161 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,162 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,162 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,162 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,163 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,163 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,163 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,164 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,164 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,164 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,164 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,165 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,165 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,165 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,165 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,165 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,167 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,167 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,169 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,169 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,170 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,177 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,178 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,178 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,178 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,179 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,179 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,195 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,196 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,196 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,199 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,199 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,209 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,209 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,212 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,213 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,215 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,215 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,216 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,227 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,227 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,227 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:06:30,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-15 23:06:30,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:06:30,229 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:06:30,229 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:06:30,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:06:30,230 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:06:30,230 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:06:30,230 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:06:30,230 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:06:30,232 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:06:30,232 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-15 23:06:30,232 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 138 transitions, 396 flow [2020-10-15 23:06:30,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-10-15 23:06:30,251 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-10-15 23:06:30,251 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-15 23:06:30,253 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 173 events. 9/173 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 284 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 208. Up to 14 conditions per place. [2020-10-15 23:06:30,257 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-15 23:06:32,705 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-15 23:06:33,102 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-15 23:06:33,282 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-15 23:06:33,301 INFO L132 LiptonReduction]: Checked pairs total: 4694 [2020-10-15 23:06:33,301 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-15 23:06:33,302 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-15 23:06:35,506 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-15 23:06:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-15 23:06:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-15 23:06:35,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:35,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-15 23:06:35,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-10-15 23:06:35,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:35,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479368312] [2020-10-15 23:06:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:06:35,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479368312] [2020-10-15 23:06:35,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:35,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:06:35,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618777739] [2020-10-15 23:06:35,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:06:35,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:35,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:06:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:06:35,528 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-15 23:06:35,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:35,724 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-15 23:06:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:06:35,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-15 23:06:35,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:35,812 INFO L225 Difference]: With dead ends: 17885 [2020-10-15 23:06:35,812 INFO L226 Difference]: Without dead ends: 16791 [2020-10-15 23:06:35,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:06:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-15 23:06:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-15 23:06:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-15 23:06:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-15 23:06:36,754 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-15 23:06:36,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:36,754 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-15 23:06:36,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:06:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-15 23:06:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 23:06:36,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:36,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:36,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-15 23:06:36,756 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-10-15 23:06:36,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:36,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853669793] [2020-10-15 23:06:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:06:36,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853669793] [2020-10-15 23:06:36,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:36,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:06:36,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362171743] [2020-10-15 23:06:36,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:06:36,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:36,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:06:36,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:06:36,806 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-15 23:06:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:37,196 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-15 23:06:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:06:37,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 23:06:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:37,348 INFO L225 Difference]: With dead ends: 30985 [2020-10-15 23:06:37,348 INFO L226 Difference]: Without dead ends: 30977 [2020-10-15 23:06:37,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:06:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-15 23:06:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-15 23:06:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-15 23:06:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-15 23:06:38,764 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-15 23:06:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:38,765 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-15 23:06:38,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:06:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-15 23:06:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 23:06:38,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:38,765 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:38,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-15 23:06:38,765 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-10-15 23:06:38,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:38,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134322210] [2020-10-15 23:06:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:06:38,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134322210] [2020-10-15 23:06:38,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:38,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:06:38,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379079322] [2020-10-15 23:06:38,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:06:38,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:38,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:06:38,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:06:38,800 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-15 23:06:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:39,178 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-15 23:06:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:06:39,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 23:06:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:39,328 INFO L225 Difference]: With dead ends: 36296 [2020-10-15 23:06:39,328 INFO L226 Difference]: Without dead ends: 36280 [2020-10-15 23:06:39,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:06:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-15 23:06:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-15 23:06:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-15 23:06:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-15 23:06:42,825 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-15 23:06:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:42,825 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-15 23:06:42,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:06:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-15 23:06:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:06:42,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:42,826 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:42,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-15 23:06:42,826 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:42,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:42,827 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-10-15 23:06:42,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:42,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320174117] [2020-10-15 23:06:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:06:42,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320174117] [2020-10-15 23:06:42,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405137800] [2020-10-15 23:06:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:42,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:06:42,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:06:43,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:43,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:06:43,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924702869] [2020-10-15 23:06:43,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:06:43,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:43,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:06:43,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:06:43,065 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-10-15 23:06:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:43,903 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-15 23:06:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:06:43,904 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-15 23:06:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:44,113 INFO L225 Difference]: With dead ends: 56720 [2020-10-15 23:06:44,113 INFO L226 Difference]: Without dead ends: 56704 [2020-10-15 23:06:44,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:06:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-15 23:06:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-15 23:06:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-15 23:06:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-15 23:06:45,994 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-15 23:06:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:45,995 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-15 23:06:45,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:06:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-15 23:06:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 23:06:45,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:45,995 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:46,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-15 23:06:46,196 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:46,196 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-10-15 23:06:46,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:46,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947926708] [2020-10-15 23:06:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:06:46,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947926708] [2020-10-15 23:06:46,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:46,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:06:46,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830091422] [2020-10-15 23:06:46,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:06:46,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:46,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:06:46,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:06:46,252 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-15 23:06:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:47,082 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-15 23:06:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:06:47,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-15 23:06:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:47,375 INFO L225 Difference]: With dead ends: 58078 [2020-10-15 23:06:47,376 INFO L226 Difference]: Without dead ends: 58061 [2020-10-15 23:06:47,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:06:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-15 23:06:51,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-15 23:06:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-15 23:06:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-15 23:06:51,901 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-15 23:06:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:51,901 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-15 23:06:51,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:06:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-15 23:06:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 23:06:51,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:51,902 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:51,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-15 23:06:51,902 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:51,903 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-10-15 23:06:51,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:51,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342650586] [2020-10-15 23:06:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:06:51,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342650586] [2020-10-15 23:06:51,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:06:51,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:06:51,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497752236] [2020-10-15 23:06:51,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:06:51,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:51,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:06:51,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:06:51,946 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-15 23:06:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:52,426 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-15 23:06:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:06:52,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-15 23:06:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:52,624 INFO L225 Difference]: With dead ends: 41885 [2020-10-15 23:06:52,624 INFO L226 Difference]: Without dead ends: 41856 [2020-10-15 23:06:52,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:06:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-15 23:06:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-15 23:06:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-15 23:06:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-15 23:06:54,377 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-15 23:06:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:54,377 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-15 23:06:54,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:06:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-15 23:06:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:06:54,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:54,378 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:54,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-15 23:06:54,379 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:54,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-10-15 23:06:54,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:54,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139096658] [2020-10-15 23:06:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:06:54,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139096658] [2020-10-15 23:06:54,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689542324] [2020-10-15 23:06:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:54,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:06:54,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:06:54,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:54,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:06:54,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620839459] [2020-10-15 23:06:54,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:06:54,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:54,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:06:54,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:06:54,646 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-10-15 23:06:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:06:55,615 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-15 23:06:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:06:55,616 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:06:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:06:55,941 INFO L225 Difference]: With dead ends: 66831 [2020-10-15 23:06:55,941 INFO L226 Difference]: Without dead ends: 66807 [2020-10-15 23:06:55,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:06:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-15 23:06:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-15 23:06:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-15 23:06:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-15 23:06:59,313 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-15 23:06:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:06:59,313 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-15 23:06:59,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:06:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-15 23:06:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:06:59,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:06:59,315 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:06:59,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-15 23:06:59,530 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:06:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:06:59,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-10-15 23:06:59,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:06:59,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684422329] [2020-10-15 23:06:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:06:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:06:59,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684422329] [2020-10-15 23:06:59,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830818894] [2020-10-15 23:06:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:06:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:06:59,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:06:59,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:06:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:06:59,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:06:59,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:06:59,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928684198] [2020-10-15 23:06:59,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:06:59,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:06:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:06:59,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:06:59,766 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-10-15 23:07:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:00,742 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-10-15 23:07:00,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:07:00,743 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-15 23:07:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:01,070 INFO L225 Difference]: With dead ends: 69484 [2020-10-15 23:07:01,071 INFO L226 Difference]: Without dead ends: 69451 [2020-10-15 23:07:01,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:07:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-15 23:07:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-10-15 23:07:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-10-15 23:07:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-10-15 23:07:03,386 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-10-15 23:07:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:03,386 INFO L481 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-10-15 23:07:03,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:07:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-10-15 23:07:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:07:03,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:03,387 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:03,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:03,588 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:03,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-10-15 23:07:03,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:03,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128991165] [2020-10-15 23:07:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:07:03,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128991165] [2020-10-15 23:07:03,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:07:03,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:07:03,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426080071] [2020-10-15 23:07:03,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:07:03,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:07:03,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:07:03,652 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-10-15 23:07:04,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:04,713 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-10-15 23:07:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:07:04,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:07:04,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:05,051 INFO L225 Difference]: With dead ends: 70510 [2020-10-15 23:07:05,052 INFO L226 Difference]: Without dead ends: 70477 [2020-10-15 23:07:05,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:07:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-10-15 23:07:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-10-15 23:07:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-10-15 23:07:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-10-15 23:07:10,408 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-10-15 23:07:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:10,409 INFO L481 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-10-15 23:07:10,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:07:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-10-15 23:07:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:07:10,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:10,410 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:10,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-15 23:07:10,410 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:10,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-10-15 23:07:10,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:10,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698698618] [2020-10-15 23:07:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:07:10,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698698618] [2020-10-15 23:07:10,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:07:10,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:07:10,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336205740] [2020-10-15 23:07:10,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:07:10,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:10,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:07:10,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:07:10,482 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-10-15 23:07:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:11,432 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-15 23:07:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:07:11,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 23:07:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:11,780 INFO L225 Difference]: With dead ends: 70096 [2020-10-15 23:07:11,780 INFO L226 Difference]: Without dead ends: 70063 [2020-10-15 23:07:11,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:07:12,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-15 23:07:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-15 23:07:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-15 23:07:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-15 23:07:14,265 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-15 23:07:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:14,265 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-15 23:07:14,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:07:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-15 23:07:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:07:14,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:14,267 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:14,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-15 23:07:14,267 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-10-15 23:07:14,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:14,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509927] [2020-10-15 23:07:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:07:14,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509927] [2020-10-15 23:07:14,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399574380] [2020-10-15 23:07:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:14,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:07:14,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:07:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:07:14,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:07:14,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:07:14,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289553304] [2020-10-15 23:07:14,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:07:14,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:14,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:07:14,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:07:14,583 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-10-15 23:07:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:16,477 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-15 23:07:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:07:16,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:07:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:16,864 INFO L225 Difference]: With dead ends: 100731 [2020-10-15 23:07:16,864 INFO L226 Difference]: Without dead ends: 100715 [2020-10-15 23:07:16,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:07:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-15 23:07:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-10-15 23:07:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-10-15 23:07:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-10-15 23:07:20,567 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-10-15 23:07:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:20,567 INFO L481 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-10-15 23:07:20,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:07:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-10-15 23:07:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:07:20,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:20,568 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:20,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-10-15 23:07:20,769 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-10-15 23:07:20,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:20,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105967007] [2020-10-15 23:07:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:07:20,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105967007] [2020-10-15 23:07:20,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819123144] [2020-10-15 23:07:20,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:20,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:07:20,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:07:20,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:07:20,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:07:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:07:21,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:07:21,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:07:21,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646402663] [2020-10-15 23:07:21,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:07:21,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:21,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:07:21,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:07:21,053 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-10-15 23:07:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:22,802 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-10-15 23:07:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:07:22,803 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:07:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:23,154 INFO L225 Difference]: With dead ends: 99876 [2020-10-15 23:07:23,155 INFO L226 Difference]: Without dead ends: 99855 [2020-10-15 23:07:23,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:07:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-10-15 23:07:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-10-15 23:07:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-15 23:07:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-15 23:07:26,309 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-15 23:07:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:26,309 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-15 23:07:26,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:07:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-15 23:07:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:07:26,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:26,310 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:26,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:26,512 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-10-15 23:07:26,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:26,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782250819] [2020-10-15 23:07:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:27,603 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 7 [2020-10-15 23:07:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:07:27,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782250819] [2020-10-15 23:07:27,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640434765] [2020-10-15 23:07:27,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:27,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:07:27,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:07:27,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:07:27,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:07:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:07:27,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:07:27,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:07:27,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643506729] [2020-10-15 23:07:27,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:07:27,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:07:27,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:07:27,882 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-10-15 23:07:29,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:29,999 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-10-15 23:07:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:07:30,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:07:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:30,460 INFO L225 Difference]: With dead ends: 100071 [2020-10-15 23:07:30,460 INFO L226 Difference]: Without dead ends: 100055 [2020-10-15 23:07:30,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:07:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-10-15 23:07:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-10-15 23:07:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-10-15 23:07:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-10-15 23:07:33,663 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-10-15 23:07:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:33,663 INFO L481 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-10-15 23:07:33,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:07:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-10-15 23:07:33,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:07:33,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:33,665 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:33,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-15 23:07:33,866 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:33,867 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-10-15 23:07:33,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:33,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480422440] [2020-10-15 23:07:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:07:33,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480422440] [2020-10-15 23:07:33,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524067579] [2020-10-15 23:07:33,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:34,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:07:34,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:07:34,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:07:34,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:07:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:07:34,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:07:34,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:07:34,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063905980] [2020-10-15 23:07:34,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:07:34,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:34,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:07:34,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:07:34,216 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-10-15 23:07:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:36,164 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-10-15 23:07:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:07:36,164 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-15 23:07:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:36,593 INFO L225 Difference]: With dead ends: 99523 [2020-10-15 23:07:36,594 INFO L226 Difference]: Without dead ends: 99502 [2020-10-15 23:07:36,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:07:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-10-15 23:07:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-10-15 23:07:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-10-15 23:07:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-10-15 23:07:40,134 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-10-15 23:07:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:40,134 INFO L481 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-10-15 23:07:40,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:07:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-10-15 23:07:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:07:40,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:40,135 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:40,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2020-10-15 23:07:40,336 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-10-15 23:07:40,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:40,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588510962] [2020-10-15 23:07:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:07:40,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588510962] [2020-10-15 23:07:40,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:07:40,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:07:40,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938917842] [2020-10-15 23:07:40,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:07:40,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:40,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:07:40,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:07:40,426 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-10-15 23:07:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:42,364 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-10-15 23:07:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:07:42,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:07:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:42,843 INFO L225 Difference]: With dead ends: 99710 [2020-10-15 23:07:42,844 INFO L226 Difference]: Without dead ends: 99694 [2020-10-15 23:07:42,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:07:44,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-10-15 23:07:45,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-10-15 23:07:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-10-15 23:07:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-10-15 23:07:45,767 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-10-15 23:07:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:45,767 INFO L481 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-10-15 23:07:45,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:07:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-10-15 23:07:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:07:45,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:45,769 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:45,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-15 23:07:45,769 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:45,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-10-15 23:07:45,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:45,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955030429] [2020-10-15 23:07:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:07:45,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955030429] [2020-10-15 23:07:45,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:07:45,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:07:45,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765640496] [2020-10-15 23:07:45,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:07:45,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:45,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:07:45,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:07:45,847 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-10-15 23:07:47,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:47,708 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-10-15 23:07:47,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:07:47,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-15 23:07:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:48,146 INFO L225 Difference]: With dead ends: 98863 [2020-10-15 23:07:48,147 INFO L226 Difference]: Without dead ends: 98841 [2020-10-15 23:07:48,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:07:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-10-15 23:07:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-10-15 23:07:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-10-15 23:07:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-10-15 23:07:51,653 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-10-15 23:07:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:51,654 INFO L481 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-10-15 23:07:51,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:07:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-10-15 23:07:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 23:07:51,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:51,655 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:51,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-15 23:07:51,655 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:51,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-10-15 23:07:51,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:51,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327130526] [2020-10-15 23:07:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:07:51,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327130526] [2020-10-15 23:07:51,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:07:51,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:07:51,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905851222] [2020-10-15 23:07:51,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:07:51,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:07:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:07:51,697 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-10-15 23:07:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:52,235 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-10-15 23:07:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:07:52,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-15 23:07:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:52,489 INFO L225 Difference]: With dead ends: 46463 [2020-10-15 23:07:52,490 INFO L226 Difference]: Without dead ends: 46417 [2020-10-15 23:07:52,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:07:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-10-15 23:07:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-10-15 23:07:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-15 23:07:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-15 23:07:54,427 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-15 23:07:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:54,427 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-15 23:07:54,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:07:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-15 23:07:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:07:54,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:54,429 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:54,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-15 23:07:54,430 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:54,430 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-10-15 23:07:54,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:54,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287981573] [2020-10-15 23:07:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:07:54,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287981573] [2020-10-15 23:07:54,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110753631] [2020-10-15 23:07:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:54,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:07:54,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:07:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:07:54,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:07:54,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:07:54,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659780778] [2020-10-15 23:07:54,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:07:54,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:07:54,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:07:54,674 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-10-15 23:07:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:07:55,839 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-15 23:07:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:07:55,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:07:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:07:56,211 INFO L225 Difference]: With dead ends: 75380 [2020-10-15 23:07:56,211 INFO L226 Difference]: Without dead ends: 75344 [2020-10-15 23:07:56,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:07:57,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-15 23:07:58,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-15 23:07:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-15 23:07:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-15 23:07:58,856 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-15 23:07:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:07:58,856 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-15 23:07:58,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:07:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-15 23:07:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:07:58,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:07:58,859 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:07:59,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:59,060 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:07:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:07:59,061 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-10-15 23:07:59,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:07:59,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463805378] [2020-10-15 23:07:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:07:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:07:59,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463805378] [2020-10-15 23:07:59,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102044978] [2020-10-15 23:07:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:07:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:07:59,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:07:59,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:07:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:07:59,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:07:59,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:07:59,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714148839] [2020-10-15 23:07:59,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:07:59,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:07:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:07:59,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:07:59,312 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-10-15 23:08:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:00,418 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-10-15 23:08:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:08:00,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:08:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:01,609 INFO L225 Difference]: With dead ends: 79487 [2020-10-15 23:08:01,609 INFO L226 Difference]: Without dead ends: 79445 [2020-10-15 23:08:01,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:08:02,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-10-15 23:08:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-10-15 23:08:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-10-15 23:08:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-10-15 23:08:04,278 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-10-15 23:08:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:04,279 INFO L481 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-10-15 23:08:04,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:08:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-10-15 23:08:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:08:04,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:04,281 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:04,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:04,482 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:04,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-10-15 23:08:04,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:04,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070536335] [2020-10-15 23:08:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:08:04,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070536335] [2020-10-15 23:08:04,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840667102] [2020-10-15 23:08:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:04,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:08:04,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:08:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:08:04,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:08:04,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:08:04,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012641213] [2020-10-15 23:08:04,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:08:04,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:04,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:08:04,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:08:04,736 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-10-15 23:08:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:06,224 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-10-15 23:08:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:08:06,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-15 23:08:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:06,649 INFO L225 Difference]: With dead ends: 82728 [2020-10-15 23:08:06,649 INFO L226 Difference]: Without dead ends: 82673 [2020-10-15 23:08:06,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:08:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-10-15 23:08:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-10-15 23:08:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-10-15 23:08:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-10-15 23:08:09,413 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-10-15 23:08:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:09,414 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-10-15 23:08:09,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:08:09,414 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-10-15 23:08:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:08:09,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:09,416 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:09,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:09,617 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-10-15 23:08:09,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:09,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719810532] [2020-10-15 23:08:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:08:09,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719810532] [2020-10-15 23:08:09,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:08:09,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:08:09,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696544026] [2020-10-15 23:08:09,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:08:09,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:09,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:08:09,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:08:09,686 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-10-15 23:08:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:10,726 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-10-15 23:08:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:08:10,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:08:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:11,153 INFO L225 Difference]: With dead ends: 83507 [2020-10-15 23:08:11,153 INFO L226 Difference]: Without dead ends: 83452 [2020-10-15 23:08:11,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:08:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-10-15 23:08:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-10-15 23:08:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-10-15 23:08:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-10-15 23:08:14,795 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-10-15 23:08:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:14,796 INFO L481 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-10-15 23:08:14,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:08:14,796 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-10-15 23:08:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:08:14,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:14,798 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:14,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-15 23:08:14,799 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:14,799 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-10-15 23:08:14,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:14,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888192889] [2020-10-15 23:08:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:08:14,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888192889] [2020-10-15 23:08:14,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:08:14,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:08:14,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219656206] [2020-10-15 23:08:14,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:08:14,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:14,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:08:14,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:08:14,861 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-10-15 23:08:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:16,026 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-10-15 23:08:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:08:16,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:08:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:16,454 INFO L225 Difference]: With dead ends: 83523 [2020-10-15 23:08:16,455 INFO L226 Difference]: Without dead ends: 83468 [2020-10-15 23:08:16,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:08:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-10-15 23:08:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-10-15 23:08:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-10-15 23:08:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-10-15 23:08:19,303 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-10-15 23:08:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:19,304 INFO L481 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-10-15 23:08:19,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:08:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-10-15 23:08:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-15 23:08:19,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:19,307 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:19,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-15 23:08:19,307 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:19,308 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-10-15 23:08:19,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:19,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599872469] [2020-10-15 23:08:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:08:19,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599872469] [2020-10-15 23:08:19,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:08:19,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:08:19,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780228308] [2020-10-15 23:08:19,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:08:19,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:19,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:08:19,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:08:19,365 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-10-15 23:08:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:20,437 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-10-15 23:08:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:08:20,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-15 23:08:20,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:20,870 INFO L225 Difference]: With dead ends: 83918 [2020-10-15 23:08:20,870 INFO L226 Difference]: Without dead ends: 83863 [2020-10-15 23:08:20,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:08:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-10-15 23:08:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-10-15 23:08:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-15 23:08:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-15 23:08:23,961 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-15 23:08:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:23,962 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-15 23:08:23,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:08:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-15 23:08:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:08:23,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:23,967 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:23,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-15 23:08:23,967 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:23,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-10-15 23:08:23,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:23,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987328180] [2020-10-15 23:08:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:08:24,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987328180] [2020-10-15 23:08:24,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787452290] [2020-10-15 23:08:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:24,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:08:24,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:08:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:08:24,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:08:24,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:08:24,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235050809] [2020-10-15 23:08:24,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:08:24,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:24,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:08:24,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:08:24,294 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-10-15 23:08:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:27,600 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-15 23:08:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:08:27,601 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:08:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:28,243 INFO L225 Difference]: With dead ends: 122892 [2020-10-15 23:08:28,244 INFO L226 Difference]: Without dead ends: 122862 [2020-10-15 23:08:28,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:08:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-15 23:08:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-10-15 23:08:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-10-15 23:08:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-10-15 23:08:31,899 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-10-15 23:08:31,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:31,900 INFO L481 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-10-15 23:08:31,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:08:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-10-15 23:08:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:08:31,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:31,905 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:32,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-15 23:08:32,106 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:32,106 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-10-15 23:08:32,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:32,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196329973] [2020-10-15 23:08:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:08:32,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196329973] [2020-10-15 23:08:32,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485882891] [2020-10-15 23:08:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:32,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:08:32,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:08:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:08:32,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:08:32,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:08:32,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022134468] [2020-10-15 23:08:32,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:08:32,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:32,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:08:32,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:08:32,424 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-10-15 23:08:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:35,112 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-10-15 23:08:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:08:35,113 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:08:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:35,716 INFO L225 Difference]: With dead ends: 121590 [2020-10-15 23:08:35,717 INFO L226 Difference]: Without dead ends: 121560 [2020-10-15 23:08:35,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:08:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-10-15 23:08:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-10-15 23:08:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-10-15 23:08:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-10-15 23:08:39,661 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-10-15 23:08:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:39,661 INFO L481 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-10-15 23:08:39,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:08:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-10-15 23:08:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:08:39,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:39,667 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:39,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:39,874 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:39,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-10-15 23:08:39,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:39,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939065248] [2020-10-15 23:08:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:08:39,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939065248] [2020-10-15 23:08:39,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417672998] [2020-10-15 23:08:39,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:40,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:08:40,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:08:40,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:08:40,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:08:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:08:40,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:08:40,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:08:40,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158686388] [2020-10-15 23:08:40,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:08:40,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:40,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:08:40,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:08:40,263 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-10-15 23:08:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:42,862 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-10-15 23:08:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:08:42,863 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:08:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:43,492 INFO L225 Difference]: With dead ends: 120395 [2020-10-15 23:08:43,492 INFO L226 Difference]: Without dead ends: 120362 [2020-10-15 23:08:43,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:08:44,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-10-15 23:08:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-10-15 23:08:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-10-15 23:08:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-10-15 23:08:47,270 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-10-15 23:08:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:47,270 INFO L481 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-10-15 23:08:47,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:08:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-10-15 23:08:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:08:47,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:47,275 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:47,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-15 23:08:47,476 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:47,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-10-15 23:08:47,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:47,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092888077] [2020-10-15 23:08:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:08:47,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092888077] [2020-10-15 23:08:47,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610423655] [2020-10-15 23:08:47,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:47,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:08:47,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:08:47,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:08:47,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:08:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:08:47,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:08:47,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:08:47,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414624023] [2020-10-15 23:08:47,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:08:47,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:47,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:08:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:08:47,811 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-10-15 23:08:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:50,144 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-10-15 23:08:50,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:08:50,145 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:08:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:50,738 INFO L225 Difference]: With dead ends: 119346 [2020-10-15 23:08:50,738 INFO L226 Difference]: Without dead ends: 119313 [2020-10-15 23:08:50,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:08:52,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-10-15 23:08:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-10-15 23:08:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-15 23:08:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-15 23:08:55,564 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-15 23:08:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:08:55,564 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-15 23:08:55,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:08:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-15 23:08:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:08:55,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:08:55,567 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:08:55,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-15 23:08:55,768 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:08:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:08:55,768 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-10-15 23:08:55,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:08:55,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539674758] [2020-10-15 23:08:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:08:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:08:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:08:55,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539674758] [2020-10-15 23:08:55,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019814516] [2020-10-15 23:08:55,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:08:55,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:08:55,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:08:55,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:08:55,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:08:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:08:56,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:08:56,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:08:56,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645271392] [2020-10-15 23:08:56,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:08:56,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:08:56,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:08:56,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:08:56,078 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-10-15 23:08:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:08:58,715 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-10-15 23:08:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:08:58,717 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:08:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:08:59,326 INFO L225 Difference]: With dead ends: 119770 [2020-10-15 23:08:59,327 INFO L226 Difference]: Without dead ends: 119740 [2020-10-15 23:08:59,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-10-15 23:09:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-10-15 23:09:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-10-15 23:09:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-10-15 23:09:02,848 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-10-15 23:09:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:02,848 INFO L481 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-10-15 23:09:02,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-10-15 23:09:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:02,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:02,853 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:03,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-15 23:09:03,054 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-10-15 23:09:03,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:03,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800055497] [2020-10-15 23:09:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:09:03,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800055497] [2020-10-15 23:09:03,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63384170] [2020-10-15 23:09:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:03,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:09:03,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:09:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:09:03,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:09:03,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:09:03,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622247222] [2020-10-15 23:09:03,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:09:03,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:09:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:09:03,416 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-10-15 23:09:05,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:05,800 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-10-15 23:09:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:05,801 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:09:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:06,347 INFO L225 Difference]: With dead ends: 121131 [2020-10-15 23:09:06,348 INFO L226 Difference]: Without dead ends: 121101 [2020-10-15 23:09:06,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-10-15 23:09:10,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-10-15 23:09:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-10-15 23:09:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-10-15 23:09:11,127 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-10-15 23:09:11,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:11,127 INFO L481 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-10-15 23:09:11,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-10-15 23:09:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:11,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:11,132 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:11,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-15 23:09:11,333 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:11,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:11,334 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-10-15 23:09:11,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:11,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607312844] [2020-10-15 23:09:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:09:11,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607312844] [2020-10-15 23:09:11,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654552021] [2020-10-15 23:09:11,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:11,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:09:11,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:09:11,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:09:11,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:09:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:09:11,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:09:11,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:09:11,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243065728] [2020-10-15 23:09:11,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:09:11,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:11,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:09:11,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:09:11,659 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-10-15 23:09:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:13,960 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-10-15 23:09:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:13,961 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:09:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:14,600 INFO L225 Difference]: With dead ends: 120194 [2020-10-15 23:09:14,601 INFO L226 Difference]: Without dead ends: 120154 [2020-10-15 23:09:14,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. [2020-10-15 23:09:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120154 to 35219. [2020-10-15 23:09:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35219 states. [2020-10-15 23:09:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35219 states to 35219 states and 187630 transitions. [2020-10-15 23:09:18,317 INFO L78 Accepts]: Start accepts. Automaton has 35219 states and 187630 transitions. Word has length 25 [2020-10-15 23:09:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:18,317 INFO L481 AbstractCegarLoop]: Abstraction has 35219 states and 187630 transitions. [2020-10-15 23:09:18,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 35219 states and 187630 transitions. [2020-10-15 23:09:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:18,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:18,322 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:18,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:18,523 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:18,524 INFO L82 PathProgramCache]: Analyzing trace with hash -647556008, now seen corresponding path program 4 times [2020-10-15 23:09:18,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:18,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365347612] [2020-10-15 23:09:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:09:18,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365347612] [2020-10-15 23:09:18,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402289064] [2020-10-15 23:09:18,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:18,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:09:18,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:09:18,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:09:18,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:09:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:09:18,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:09:18,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:09:18,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900557944] [2020-10-15 23:09:18,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:09:18,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:09:18,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:09:18,843 INFO L87 Difference]: Start difference. First operand 35219 states and 187630 transitions. Second operand 16 states. [2020-10-15 23:09:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:21,253 INFO L93 Difference]: Finished difference Result 118559 states and 539905 transitions. [2020-10-15 23:09:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:21,253 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:09:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:21,852 INFO L225 Difference]: With dead ends: 118559 [2020-10-15 23:09:21,852 INFO L226 Difference]: Without dead ends: 118526 [2020-10-15 23:09:21,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118526 states. [2020-10-15 23:09:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118526 to 34815. [2020-10-15 23:09:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-15 23:09:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185346 transitions. [2020-10-15 23:09:26,307 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185346 transitions. Word has length 25 [2020-10-15 23:09:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:26,308 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185346 transitions. [2020-10-15 23:09:26,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:26,308 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185346 transitions. [2020-10-15 23:09:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:26,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:26,312 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:26,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-15 23:09:26,520 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:26,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1056609241, now seen corresponding path program 3 times [2020-10-15 23:09:26,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:26,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298891807] [2020-10-15 23:09:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:26,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298891807] [2020-10-15 23:09:26,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734364894] [2020-10-15 23:09:26,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:26,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:09:26,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:09:26,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:09:26,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:09:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:26,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:09:26,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:09:26,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122900590] [2020-10-15 23:09:26,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:09:26,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:26,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:09:26,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:09:26,845 INFO L87 Difference]: Start difference. First operand 34815 states and 185346 transitions. Second operand 16 states. [2020-10-15 23:09:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:29,189 INFO L93 Difference]: Finished difference Result 118955 states and 542533 transitions. [2020-10-15 23:09:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:29,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:09:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:29,758 INFO L225 Difference]: With dead ends: 118955 [2020-10-15 23:09:29,759 INFO L226 Difference]: Without dead ends: 118925 [2020-10-15 23:09:29,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118925 states. [2020-10-15 23:09:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118925 to 34363. [2020-10-15 23:09:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34363 states. [2020-10-15 23:09:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34363 states to 34363 states and 182968 transitions. [2020-10-15 23:09:33,372 INFO L78 Accepts]: Start accepts. Automaton has 34363 states and 182968 transitions. Word has length 25 [2020-10-15 23:09:33,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:33,372 INFO L481 AbstractCegarLoop]: Abstraction has 34363 states and 182968 transitions. [2020-10-15 23:09:33,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 34363 states and 182968 transitions. [2020-10-15 23:09:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:33,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:33,377 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:33,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-15 23:09:33,578 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:33,578 INFO L82 PathProgramCache]: Analyzing trace with hash -989383992, now seen corresponding path program 3 times [2020-10-15 23:09:33,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:33,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138141039] [2020-10-15 23:09:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:33,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138141039] [2020-10-15 23:09:33,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585873498] [2020-10-15 23:09:33,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:33,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:09:33,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:09:33,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:09:33,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:09:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:33,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:09:33,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:09:33,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445396497] [2020-10-15 23:09:33,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:09:33,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:33,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:09:33,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:09:33,941 INFO L87 Difference]: Start difference. First operand 34363 states and 182968 transitions. Second operand 16 states. [2020-10-15 23:09:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:36,448 INFO L93 Difference]: Finished difference Result 117996 states and 537739 transitions. [2020-10-15 23:09:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:36,449 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:09:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:37,047 INFO L225 Difference]: With dead ends: 117996 [2020-10-15 23:09:37,048 INFO L226 Difference]: Without dead ends: 117966 [2020-10-15 23:09:37,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117966 states. [2020-10-15 23:09:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117966 to 34024. [2020-10-15 23:09:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34024 states. [2020-10-15 23:09:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34024 states to 34024 states and 181250 transitions. [2020-10-15 23:09:41,407 INFO L78 Accepts]: Start accepts. Automaton has 34024 states and 181250 transitions. Word has length 25 [2020-10-15 23:09:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:41,407 INFO L481 AbstractCegarLoop]: Abstraction has 34024 states and 181250 transitions. [2020-10-15 23:09:41,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 34024 states and 181250 transitions. [2020-10-15 23:09:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:41,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:41,412 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:41,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-15 23:09:41,613 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:41,614 INFO L82 PathProgramCache]: Analyzing trace with hash 507575079, now seen corresponding path program 4 times [2020-10-15 23:09:41,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:41,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541641379] [2020-10-15 23:09:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:41,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541641379] [2020-10-15 23:09:41,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287648656] [2020-10-15 23:09:41,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:41,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:09:41,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:09:41,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:09:41,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:09:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:41,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:09:41,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:09:41,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765806438] [2020-10-15 23:09:41,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:09:41,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:41,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:09:41,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:09:41,956 INFO L87 Difference]: Start difference. First operand 34024 states and 181250 transitions. Second operand 16 states. [2020-10-15 23:09:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:44,546 INFO L93 Difference]: Finished difference Result 119076 states and 543105 transitions. [2020-10-15 23:09:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:44,547 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:09:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:45,148 INFO L225 Difference]: With dead ends: 119076 [2020-10-15 23:09:45,149 INFO L226 Difference]: Without dead ends: 119036 [2020-10-15 23:09:45,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119036 states. [2020-10-15 23:09:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119036 to 33873. [2020-10-15 23:09:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33873 states. [2020-10-15 23:09:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33873 states to 33873 states and 180354 transitions. [2020-10-15 23:09:48,685 INFO L78 Accepts]: Start accepts. Automaton has 33873 states and 180354 transitions. Word has length 25 [2020-10-15 23:09:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:48,685 INFO L481 AbstractCegarLoop]: Abstraction has 33873 states and 180354 transitions. [2020-10-15 23:09:48,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 33873 states and 180354 transitions. [2020-10-15 23:09:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:48,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:48,688 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:48,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-15 23:09:48,889 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash 507547272, now seen corresponding path program 4 times [2020-10-15 23:09:48,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:48,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611138627] [2020-10-15 23:09:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:48,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611138627] [2020-10-15 23:09:48,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761628583] [2020-10-15 23:09:48,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:49,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:09:49,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:09:49,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:09:49,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:09:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:09:49,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:09:49,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:09:49,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430682793] [2020-10-15 23:09:49,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:09:49,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:49,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:09:49,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:09:49,271 INFO L87 Difference]: Start difference. First operand 33873 states and 180354 transitions. Second operand 16 states. [2020-10-15 23:09:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:51,625 INFO L93 Difference]: Finished difference Result 118020 states and 538147 transitions. [2020-10-15 23:09:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:51,626 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 23:09:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:52,046 INFO L225 Difference]: With dead ends: 118020 [2020-10-15 23:09:52,046 INFO L226 Difference]: Without dead ends: 117980 [2020-10-15 23:09:52,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:09:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117980 states. [2020-10-15 23:09:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117980 to 33387. [2020-10-15 23:09:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33387 states. [2020-10-15 23:09:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33387 states to 33387 states and 177693 transitions. [2020-10-15 23:09:55,019 INFO L78 Accepts]: Start accepts. Automaton has 33387 states and 177693 transitions. Word has length 25 [2020-10-15 23:09:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:55,019 INFO L481 AbstractCegarLoop]: Abstraction has 33387 states and 177693 transitions. [2020-10-15 23:09:55,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:09:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 33387 states and 177693 transitions. [2020-10-15 23:09:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:55,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:55,022 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:55,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:09:55,222 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:55,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:55,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1147615783, now seen corresponding path program 5 times [2020-10-15 23:09:55,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:55,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512427779] [2020-10-15 23:09:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:09:55,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512427779] [2020-10-15 23:09:55,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:09:55,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:09:55,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129396010] [2020-10-15 23:09:55,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:09:55,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:55,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:09:55,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:09:55,291 INFO L87 Difference]: Start difference. First operand 33387 states and 177693 transitions. Second operand 9 states. [2020-10-15 23:09:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:09:56,925 INFO L93 Difference]: Finished difference Result 118363 states and 539792 transitions. [2020-10-15 23:09:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:09:56,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:09:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:09:57,278 INFO L225 Difference]: With dead ends: 118363 [2020-10-15 23:09:57,278 INFO L226 Difference]: Without dead ends: 118333 [2020-10-15 23:09:57,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:09:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118333 states. [2020-10-15 23:09:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118333 to 32908. [2020-10-15 23:09:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32908 states. [2020-10-15 23:09:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32908 states to 32908 states and 175152 transitions. [2020-10-15 23:09:59,743 INFO L78 Accepts]: Start accepts. Automaton has 32908 states and 175152 transitions. Word has length 25 [2020-10-15 23:09:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:09:59,744 INFO L481 AbstractCegarLoop]: Abstraction has 32908 states and 175152 transitions. [2020-10-15 23:09:59,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:09:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 32908 states and 175152 transitions. [2020-10-15 23:09:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:09:59,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:09:59,746 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:09:59,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-10-15 23:09:59,746 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:09:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:09:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1147599384, now seen corresponding path program 5 times [2020-10-15 23:09:59,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:09:59,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755495579] [2020-10-15 23:09:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:09:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:09:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:09:59,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755495579] [2020-10-15 23:09:59,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:09:59,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:09:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766419983] [2020-10-15 23:09:59,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:09:59,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:09:59,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:09:59,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:09:59,816 INFO L87 Difference]: Start difference. First operand 32908 states and 175152 transitions. Second operand 9 states. [2020-10-15 23:10:01,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:01,378 INFO L93 Difference]: Finished difference Result 117027 states and 533313 transitions. [2020-10-15 23:10:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:10:01,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:10:01,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:01,723 INFO L225 Difference]: With dead ends: 117027 [2020-10-15 23:10:01,723 INFO L226 Difference]: Without dead ends: 116997 [2020-10-15 23:10:01,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:10:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116997 states. [2020-10-15 23:10:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116997 to 32394. [2020-10-15 23:10:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32394 states. [2020-10-15 23:10:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32394 states to 32394 states and 172458 transitions. [2020-10-15 23:10:04,588 INFO L78 Accepts]: Start accepts. Automaton has 32394 states and 172458 transitions. Word has length 25 [2020-10-15 23:10:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:04,588 INFO L481 AbstractCegarLoop]: Abstraction has 32394 states and 172458 transitions. [2020-10-15 23:10:04,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:10:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 32394 states and 172458 transitions. [2020-10-15 23:10:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:10:04,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:04,591 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:04,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-10-15 23:10:04,591 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:04,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1136664103, now seen corresponding path program 6 times [2020-10-15 23:10:04,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:04,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409676172] [2020-10-15 23:10:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:10:04,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409676172] [2020-10-15 23:10:04,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:10:04,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:10:04,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958052300] [2020-10-15 23:10:04,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:10:04,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:04,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:10:04,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:10:04,658 INFO L87 Difference]: Start difference. First operand 32394 states and 172458 transitions. Second operand 9 states. [2020-10-15 23:10:06,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:06,114 INFO L93 Difference]: Finished difference Result 116213 states and 529114 transitions. [2020-10-15 23:10:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:10:06,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:10:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:06,470 INFO L225 Difference]: With dead ends: 116213 [2020-10-15 23:10:06,470 INFO L226 Difference]: Without dead ends: 116173 [2020-10-15 23:10:06,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:10:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116173 states. [2020-10-15 23:10:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116173 to 31530. [2020-10-15 23:10:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31530 states. [2020-10-15 23:10:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31530 states to 31530 states and 168028 transitions. [2020-10-15 23:10:08,937 INFO L78 Accepts]: Start accepts. Automaton has 31530 states and 168028 transitions. Word has length 25 [2020-10-15 23:10:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:08,937 INFO L481 AbstractCegarLoop]: Abstraction has 31530 states and 168028 transitions. [2020-10-15 23:10:08,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:10:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31530 states and 168028 transitions. [2020-10-15 23:10:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:10:08,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:08,939 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:08,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-10-15 23:10:08,940 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:08,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1136636296, now seen corresponding path program 5 times [2020-10-15 23:10:08,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:08,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319004319] [2020-10-15 23:10:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:10:09,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319004319] [2020-10-15 23:10:09,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:10:09,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:10:09,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565680433] [2020-10-15 23:10:09,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:10:09,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:09,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:10:09,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:10:09,006 INFO L87 Difference]: Start difference. First operand 31530 states and 168028 transitions. Second operand 9 states. [2020-10-15 23:10:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:10,605 INFO L93 Difference]: Finished difference Result 115048 states and 523573 transitions. [2020-10-15 23:10:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:10:10,606 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:10:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:10,944 INFO L225 Difference]: With dead ends: 115048 [2020-10-15 23:10:10,945 INFO L226 Difference]: Without dead ends: 115018 [2020-10-15 23:10:10,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:10:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115018 states. [2020-10-15 23:10:13,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115018 to 31199. [2020-10-15 23:10:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31199 states. [2020-10-15 23:10:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31199 states to 31199 states and 166334 transitions. [2020-10-15 23:10:13,783 INFO L78 Accepts]: Start accepts. Automaton has 31199 states and 166334 transitions. Word has length 25 [2020-10-15 23:10:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:13,783 INFO L481 AbstractCegarLoop]: Abstraction has 31199 states and 166334 transitions. [2020-10-15 23:10:13,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:10:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 31199 states and 166334 transitions. [2020-10-15 23:10:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:10:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:13,786 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:13,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-10-15 23:10:13,786 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:13,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1120904664, now seen corresponding path program 6 times [2020-10-15 23:10:13,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:13,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260306856] [2020-10-15 23:10:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:10:13,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260306856] [2020-10-15 23:10:13,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:10:13,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:10:13,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121128715] [2020-10-15 23:10:13,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:10:13,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:13,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:10:13,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:10:13,854 INFO L87 Difference]: Start difference. First operand 31199 states and 166334 transitions. Second operand 9 states. [2020-10-15 23:10:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:15,352 INFO L93 Difference]: Finished difference Result 114413 states and 520399 transitions. [2020-10-15 23:10:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:10:15,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:10:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:15,696 INFO L225 Difference]: With dead ends: 114413 [2020-10-15 23:10:15,697 INFO L226 Difference]: Without dead ends: 114373 [2020-10-15 23:10:15,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:10:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114373 states. [2020-10-15 23:10:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114373 to 30592. [2020-10-15 23:10:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30592 states. [2020-10-15 23:10:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30592 states to 30592 states and 163260 transitions. [2020-10-15 23:10:18,076 INFO L78 Accepts]: Start accepts. Automaton has 30592 states and 163260 transitions. Word has length 25 [2020-10-15 23:10:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:18,076 INFO L481 AbstractCegarLoop]: Abstraction has 30592 states and 163260 transitions. [2020-10-15 23:10:18,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:10:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 30592 states and 163260 transitions. [2020-10-15 23:10:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:10:18,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:18,078 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:18,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-10-15 23:10:18,078 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:18,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1120893256, now seen corresponding path program 6 times [2020-10-15 23:10:18,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:18,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513682145] [2020-10-15 23:10:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:10:18,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513682145] [2020-10-15 23:10:18,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:10:18,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:10:18,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060913561] [2020-10-15 23:10:18,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:10:18,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:18,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:10:18,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:10:18,176 INFO L87 Difference]: Start difference. First operand 30592 states and 163260 transitions. Second operand 9 states. [2020-10-15 23:10:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:19,669 INFO L93 Difference]: Finished difference Result 113466 states and 515911 transitions. [2020-10-15 23:10:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:10:19,669 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-15 23:10:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:20,008 INFO L225 Difference]: With dead ends: 113466 [2020-10-15 23:10:20,008 INFO L226 Difference]: Without dead ends: 113426 [2020-10-15 23:10:20,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:10:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113426 states. [2020-10-15 23:10:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113426 to 29802. [2020-10-15 23:10:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29802 states. [2020-10-15 23:10:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29802 states to 29802 states and 159321 transitions. [2020-10-15 23:10:22,785 INFO L78 Accepts]: Start accepts. Automaton has 29802 states and 159321 transitions. Word has length 25 [2020-10-15 23:10:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:22,786 INFO L481 AbstractCegarLoop]: Abstraction has 29802 states and 159321 transitions. [2020-10-15 23:10:22,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:10:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 29802 states and 159321 transitions. [2020-10-15 23:10:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 23:10:22,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:22,788 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:22,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-10-15 23:10:22,788 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:22,788 INFO L82 PathProgramCache]: Analyzing trace with hash 123792641, now seen corresponding path program 1 times [2020-10-15 23:10:22,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:22,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656173154] [2020-10-15 23:10:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:10:22,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656173154] [2020-10-15 23:10:22,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:10:22,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:10:22,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62985494] [2020-10-15 23:10:22,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:10:22,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:10:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:10:22,818 INFO L87 Difference]: Start difference. First operand 29802 states and 159321 transitions. Second operand 5 states. [2020-10-15 23:10:23,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:23,244 INFO L93 Difference]: Finished difference Result 53165 states and 272731 transitions. [2020-10-15 23:10:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:10:23,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-15 23:10:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:23,410 INFO L225 Difference]: With dead ends: 53165 [2020-10-15 23:10:23,410 INFO L226 Difference]: Without dead ends: 53102 [2020-10-15 23:10:23,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:10:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53102 states. [2020-10-15 23:10:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53102 to 37675. [2020-10-15 23:10:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-10-15 23:10:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-10-15 23:10:24,935 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-10-15 23:10:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:24,936 INFO L481 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-10-15 23:10:24,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:10:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-10-15 23:10:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:10:24,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:24,939 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:24,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-10-15 23:10:24,939 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:24,939 INFO L82 PathProgramCache]: Analyzing trace with hash -480284107, now seen corresponding path program 1 times [2020-10-15 23:10:24,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:24,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691802115] [2020-10-15 23:10:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:10:25,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691802115] [2020-10-15 23:10:25,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988699190] [2020-10-15 23:10:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:10:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:25,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:10:25,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:10:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:10:25,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:10:25,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:10:25,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321714277] [2020-10-15 23:10:25,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:10:25,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:10:25,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:10:25,299 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 20 states. [2020-10-15 23:10:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:28,983 INFO L93 Difference]: Finished difference Result 186148 states and 815009 transitions. [2020-10-15 23:10:28,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:10:28,983 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:10:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:29,501 INFO L225 Difference]: With dead ends: 186148 [2020-10-15 23:10:29,501 INFO L226 Difference]: Without dead ends: 186130 [2020-10-15 23:10:29,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:10:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186130 states. [2020-10-15 23:10:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186130 to 37780. [2020-10-15 23:10:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37780 states. [2020-10-15 23:10:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37780 states to 37780 states and 201508 transitions. [2020-10-15 23:10:33,794 INFO L78 Accepts]: Start accepts. Automaton has 37780 states and 201508 transitions. Word has length 27 [2020-10-15 23:10:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:33,794 INFO L481 AbstractCegarLoop]: Abstraction has 37780 states and 201508 transitions. [2020-10-15 23:10:33,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:10:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 37780 states and 201508 transitions. [2020-10-15 23:10:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:10:33,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:33,798 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:33,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-10-15 23:10:33,998 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1807002315, now seen corresponding path program 2 times [2020-10-15 23:10:33,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:34,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719126577] [2020-10-15 23:10:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:10:34,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719126577] [2020-10-15 23:10:34,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050220174] [2020-10-15 23:10:34,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:10:34,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:10:34,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:10:34,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:10:34,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:10:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:10:34,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:10:34,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:10:34,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408624085] [2020-10-15 23:10:34,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:10:34,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:34,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:10:34,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:10:34,345 INFO L87 Difference]: Start difference. First operand 37780 states and 201508 transitions. Second operand 20 states. [2020-10-15 23:10:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:38,048 INFO L93 Difference]: Finished difference Result 185731 states and 813247 transitions. [2020-10-15 23:10:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:10:38,049 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:10:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:38,575 INFO L225 Difference]: With dead ends: 185731 [2020-10-15 23:10:38,575 INFO L226 Difference]: Without dead ends: 185707 [2020-10-15 23:10:38,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:10:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185707 states. [2020-10-15 23:10:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185707 to 37506. [2020-10-15 23:10:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37506 states. [2020-10-15 23:10:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37506 states to 37506 states and 200034 transitions. [2020-10-15 23:10:43,050 INFO L78 Accepts]: Start accepts. Automaton has 37506 states and 200034 transitions. Word has length 27 [2020-10-15 23:10:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:43,051 INFO L481 AbstractCegarLoop]: Abstraction has 37506 states and 200034 transitions. [2020-10-15 23:10:43,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:10:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 37506 states and 200034 transitions. [2020-10-15 23:10:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:10:43,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:43,054 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:43,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-15 23:10:43,255 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:43,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2078895349, now seen corresponding path program 3 times [2020-10-15 23:10:43,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:43,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378238454] [2020-10-15 23:10:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:10:43,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378238454] [2020-10-15 23:10:43,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700406840] [2020-10-15 23:10:43,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:10:43,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 23:10:43,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:10:43,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:10:43,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:10:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:10:43,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:10:43,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:10:43,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200735066] [2020-10-15 23:10:43,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:10:43,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:43,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:10:43,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:10:43,607 INFO L87 Difference]: Start difference. First operand 37506 states and 200034 transitions. Second operand 20 states. [2020-10-15 23:10:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:47,203 INFO L93 Difference]: Finished difference Result 185071 states and 810108 transitions. [2020-10-15 23:10:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:10:47,204 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:10:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:47,721 INFO L225 Difference]: With dead ends: 185071 [2020-10-15 23:10:47,722 INFO L226 Difference]: Without dead ends: 185053 [2020-10-15 23:10:47,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1842 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:10:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185053 states. [2020-10-15 23:10:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185053 to 37607. [2020-10-15 23:10:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37607 states. [2020-10-15 23:10:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37607 states to 37607 states and 200519 transitions. [2020-10-15 23:10:51,368 INFO L78 Accepts]: Start accepts. Automaton has 37607 states and 200519 transitions. Word has length 27 [2020-10-15 23:10:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:10:51,368 INFO L481 AbstractCegarLoop]: Abstraction has 37607 states and 200519 transitions. [2020-10-15 23:10:51,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:10:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 37607 states and 200519 transitions. [2020-10-15 23:10:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:10:51,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:10:51,371 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:10:51,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:10:51,572 INFO L429 AbstractCegarLoop]: === Iteration 46 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:10:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:10:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash -651887627, now seen corresponding path program 4 times [2020-10-15 23:10:51,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:10:51,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047986305] [2020-10-15 23:10:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:10:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:10:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:10:51,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047986305] [2020-10-15 23:10:51,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389720501] [2020-10-15 23:10:51,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:10:51,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:10:51,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:10:51,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:10:51,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:10:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 23:10:52,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:10:52,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:10:52,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023050323] [2020-10-15 23:10:52,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:10:52,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:10:52,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:10:52,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:10:52,492 INFO L87 Difference]: Start difference. First operand 37607 states and 200519 transitions. Second operand 20 states. [2020-10-15 23:10:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:10:56,133 INFO L93 Difference]: Finished difference Result 184772 states and 808751 transitions. [2020-10-15 23:10:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:10:56,134 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:10:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:10:56,671 INFO L225 Difference]: With dead ends: 184772 [2020-10-15 23:10:56,671 INFO L226 Difference]: Without dead ends: 184748 [2020-10-15 23:10:56,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:10:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184748 states. [2020-10-15 23:11:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184748 to 37341. [2020-10-15 23:11:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37341 states. [2020-10-15 23:11:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37341 states to 37341 states and 199065 transitions. [2020-10-15 23:11:00,377 INFO L78 Accepts]: Start accepts. Automaton has 37341 states and 199065 transitions. Word has length 27 [2020-10-15 23:11:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:00,377 INFO L481 AbstractCegarLoop]: Abstraction has 37341 states and 199065 transitions. [2020-10-15 23:11:00,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:11:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 37341 states and 199065 transitions. [2020-10-15 23:11:00,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:00,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:00,380 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:00,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:00,581 INFO L429 AbstractCegarLoop]: === Iteration 47 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:00,582 INFO L82 PathProgramCache]: Analyzing trace with hash -11846923, now seen corresponding path program 5 times [2020-10-15 23:11:00,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:00,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149429463] [2020-10-15 23:11:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:11:00,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149429463] [2020-10-15 23:11:00,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554436988] [2020-10-15 23:11:00,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:00,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 23:11:00,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:11:00,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:11:00,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:11:00,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:00,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:11:00,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955764898] [2020-10-15 23:11:00,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:11:00,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:11:00,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:00,941 INFO L87 Difference]: Start difference. First operand 37341 states and 199065 transitions. Second operand 20 states. [2020-10-15 23:11:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:05,136 INFO L93 Difference]: Finished difference Result 184120 states and 805632 transitions. [2020-10-15 23:11:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:11:05,137 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:11:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:05,647 INFO L225 Difference]: With dead ends: 184120 [2020-10-15 23:11:05,647 INFO L226 Difference]: Without dead ends: 184102 [2020-10-15 23:11:05,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:11:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184102 states. [2020-10-15 23:11:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184102 to 37438. [2020-10-15 23:11:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37438 states. [2020-10-15 23:11:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37438 states to 37438 states and 199538 transitions. [2020-10-15 23:11:09,161 INFO L78 Accepts]: Start accepts. Automaton has 37438 states and 199538 transitions. Word has length 27 [2020-10-15 23:11:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:09,161 INFO L481 AbstractCegarLoop]: Abstraction has 37438 states and 199538 transitions. [2020-10-15 23:11:09,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:11:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 37438 states and 199538 transitions. [2020-10-15 23:11:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:09,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:09,165 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:09,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:09,365 INFO L429 AbstractCegarLoop]: === Iteration 48 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash -22798603, now seen corresponding path program 6 times [2020-10-15 23:11:09,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:09,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336254561] [2020-10-15 23:11:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:11:09,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336254561] [2020-10-15 23:11:09,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722136243] [2020-10-15 23:11:09,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:09,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 23:11:09,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:11:09,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:11:09,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:11:09,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:09,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:11:09,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527313251] [2020-10-15 23:11:09,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:11:09,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:11:09,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:09,727 INFO L87 Difference]: Start difference. First operand 37438 states and 199538 transitions. Second operand 20 states. [2020-10-15 23:11:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:13,404 INFO L93 Difference]: Finished difference Result 183711 states and 803890 transitions. [2020-10-15 23:11:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:11:13,405 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:11:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:13,922 INFO L225 Difference]: With dead ends: 183711 [2020-10-15 23:11:13,923 INFO L226 Difference]: Without dead ends: 183683 [2020-10-15 23:11:13,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:11:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183683 states. [2020-10-15 23:11:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183683 to 37176. [2020-10-15 23:11:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37176 states. [2020-10-15 23:11:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37176 states to 37176 states and 198103 transitions. [2020-10-15 23:11:18,089 INFO L78 Accepts]: Start accepts. Automaton has 37176 states and 198103 transitions. Word has length 27 [2020-10-15 23:11:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:18,089 INFO L481 AbstractCegarLoop]: Abstraction has 37176 states and 198103 transitions. [2020-10-15 23:11:18,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:11:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 37176 states and 198103 transitions. [2020-10-15 23:11:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:18,093 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:18,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-15 23:11:18,293 INFO L429 AbstractCegarLoop]: === Iteration 49 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:18,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:18,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1035670065, now seen corresponding path program 1 times [2020-10-15 23:11:18,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:18,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30227309] [2020-10-15 23:11:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:11:18,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30227309] [2020-10-15 23:11:18,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373539372] [2020-10-15 23:11:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:18,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:11:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:11:18,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:18,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:11:18,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155977006] [2020-10-15 23:11:18,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:11:18,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:18,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:11:18,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:11:18,504 INFO L87 Difference]: Start difference. First operand 37176 states and 198103 transitions. Second operand 12 states. [2020-10-15 23:11:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:19,303 INFO L93 Difference]: Finished difference Result 82213 states and 399726 transitions. [2020-10-15 23:11:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:11:19,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:11:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:19,558 INFO L225 Difference]: With dead ends: 82213 [2020-10-15 23:11:19,558 INFO L226 Difference]: Without dead ends: 82165 [2020-10-15 23:11:19,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-15 23:11:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 38439. [2020-10-15 23:11:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-10-15 23:11:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-10-15 23:11:21,596 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-10-15 23:11:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:21,596 INFO L481 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-10-15 23:11:21,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:11:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-10-15 23:11:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:21,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:21,600 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:21,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-10-15 23:11:21,800 INFO L429 AbstractCegarLoop]: === Iteration 50 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:21,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1753210507, now seen corresponding path program 7 times [2020-10-15 23:11:21,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:21,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461030524] [2020-10-15 23:11:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461030524] [2020-10-15 23:11:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674531574] [2020-10-15 23:11:21,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:21,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:11:21,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:22,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:22,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:11:22,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116082910] [2020-10-15 23:11:22,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:11:22,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:11:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:22,164 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 20 states. [2020-10-15 23:11:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:26,056 INFO L93 Difference]: Finished difference Result 183266 states and 800955 transitions. [2020-10-15 23:11:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:11:26,057 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:11:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:26,578 INFO L225 Difference]: With dead ends: 183266 [2020-10-15 23:11:26,578 INFO L226 Difference]: Without dead ends: 183248 [2020-10-15 23:11:26,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:11:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183248 states. [2020-10-15 23:11:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183248 to 38274. [2020-10-15 23:11:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38274 states. [2020-10-15 23:11:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38274 states to 38274 states and 203647 transitions. [2020-10-15 23:11:30,317 INFO L78 Accepts]: Start accepts. Automaton has 38274 states and 203647 transitions. Word has length 27 [2020-10-15 23:11:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:30,317 INFO L481 AbstractCegarLoop]: Abstraction has 38274 states and 203647 transitions. [2020-10-15 23:11:30,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:11:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 38274 states and 203647 transitions. [2020-10-15 23:11:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:30,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:30,321 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:30,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-15 23:11:30,522 INFO L429 AbstractCegarLoop]: === Iteration 51 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1215038581, now seen corresponding path program 8 times [2020-10-15 23:11:30,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:30,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083442983] [2020-10-15 23:11:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:11:30,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083442983] [2020-10-15 23:11:30,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101924212] [2020-10-15 23:11:30,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:30,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:11:30,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:11:30,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:11:30,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:11:30,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:30,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:11:30,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094308808] [2020-10-15 23:11:30,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:11:30,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:30,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:11:30,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:30,873 INFO L87 Difference]: Start difference. First operand 38274 states and 203647 transitions. Second operand 20 states. [2020-10-15 23:11:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:35,066 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-10-15 23:11:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:11:35,067 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:11:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:36,520 INFO L225 Difference]: With dead ends: 182849 [2020-10-15 23:11:36,520 INFO L226 Difference]: Without dead ends: 182825 [2020-10-15 23:11:36,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:11:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-10-15 23:11:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37880. [2020-10-15 23:11:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37880 states. [2020-10-15 23:11:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37880 states to 37880 states and 201614 transitions. [2020-10-15 23:11:40,041 INFO L78 Accepts]: Start accepts. Automaton has 37880 states and 201614 transitions. Word has length 27 [2020-10-15 23:11:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:40,041 INFO L481 AbstractCegarLoop]: Abstraction has 37880 states and 201614 transitions. [2020-10-15 23:11:40,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:11:40,041 INFO L276 IsEmpty]: Start isEmpty. Operand 37880 states and 201614 transitions. [2020-10-15 23:11:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:40,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:40,045 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:40,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-15 23:11:40,246 INFO L429 AbstractCegarLoop]: === Iteration 52 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:40,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:40,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1641326347, now seen corresponding path program 9 times [2020-10-15 23:11:40,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:40,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844827242] [2020-10-15 23:11:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:40,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844827242] [2020-10-15 23:11:40,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893293838] [2020-10-15 23:11:40,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:40,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:11:40,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:11:40,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:11:40,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:40,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:40,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:11:40,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11369107] [2020-10-15 23:11:40,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:11:40,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:40,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:11:40,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:40,606 INFO L87 Difference]: Start difference. First operand 37880 states and 201614 transitions. Second operand 20 states. [2020-10-15 23:11:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:44,776 INFO L93 Difference]: Finished difference Result 183813 states and 803277 transitions. [2020-10-15 23:11:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:11:44,777 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:11:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:45,301 INFO L225 Difference]: With dead ends: 183813 [2020-10-15 23:11:45,301 INFO L226 Difference]: Without dead ends: 183795 [2020-10-15 23:11:45,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:11:46,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183795 states. [2020-10-15 23:11:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183795 to 37981. [2020-10-15 23:11:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-10-15 23:11:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202099 transitions. [2020-10-15 23:11:49,831 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202099 transitions. Word has length 27 [2020-10-15 23:11:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:49,832 INFO L481 AbstractCegarLoop]: Abstraction has 37981 states and 202099 transitions. [2020-10-15 23:11:49,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:11:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202099 transitions. [2020-10-15 23:11:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:49,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:49,836 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:50,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-10-15 23:11:50,044 INFO L429 AbstractCegarLoop]: === Iteration 53 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:50,045 INFO L82 PathProgramCache]: Analyzing trace with hash -144395083, now seen corresponding path program 10 times [2020-10-15 23:11:50,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:50,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629319795] [2020-10-15 23:11:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:50,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629319795] [2020-10-15 23:11:50,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713300016] [2020-10-15 23:11:50,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:50,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:11:50,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:11:50,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:11:50,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:11:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:11:50,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:11:50,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:11:50,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238543250] [2020-10-15 23:11:50,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:11:50,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:11:50,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:11:50,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:11:50,404 INFO L87 Difference]: Start difference. First operand 37981 states and 202099 transitions. Second operand 20 states. [2020-10-15 23:11:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:11:54,610 INFO L93 Difference]: Finished difference Result 184566 states and 806586 transitions. [2020-10-15 23:11:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:11:54,611 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:11:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:11:55,128 INFO L225 Difference]: With dead ends: 184566 [2020-10-15 23:11:55,128 INFO L226 Difference]: Without dead ends: 184542 [2020-10-15 23:11:55,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:11:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184542 states. [2020-10-15 23:11:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184542 to 37715. [2020-10-15 23:11:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2020-10-15 23:11:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 200645 transitions. [2020-10-15 23:11:59,661 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 200645 transitions. Word has length 27 [2020-10-15 23:11:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:11:59,661 INFO L481 AbstractCegarLoop]: Abstraction has 37715 states and 200645 transitions. [2020-10-15 23:11:59,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:11:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 200645 transitions. [2020-10-15 23:11:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:11:59,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:11:59,666 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:11:59,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:11:59,881 INFO L429 AbstractCegarLoop]: === Iteration 54 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:11:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:11:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash 484693941, now seen corresponding path program 11 times [2020-10-15 23:11:59,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:11:59,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44401904] [2020-10-15 23:11:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:11:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:11:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:11:59,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44401904] [2020-10-15 23:11:59,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059057707] [2020-10-15 23:11:59,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:00,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 23:12:00,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:00,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:12:00,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:00,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:00,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:12:00,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456881129] [2020-10-15 23:12:00,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:12:00,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:00,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:12:00,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:00,248 INFO L87 Difference]: Start difference. First operand 37715 states and 200645 transitions. Second operand 20 states. [2020-10-15 23:12:04,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:04,131 INFO L93 Difference]: Finished difference Result 183914 states and 803467 transitions. [2020-10-15 23:12:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:12:04,132 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:12:04,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:04,651 INFO L225 Difference]: With dead ends: 183914 [2020-10-15 23:12:04,651 INFO L226 Difference]: Without dead ends: 183896 [2020-10-15 23:12:04,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:12:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183896 states. [2020-10-15 23:12:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183896 to 37812. [2020-10-15 23:12:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37812 states. [2020-10-15 23:12:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37812 states to 37812 states and 201118 transitions. [2020-10-15 23:12:08,340 INFO L78 Accepts]: Start accepts. Automaton has 37812 states and 201118 transitions. Word has length 27 [2020-10-15 23:12:08,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:08,341 INFO L481 AbstractCegarLoop]: Abstraction has 37812 states and 201118 transitions. [2020-10-15 23:12:08,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:12:08,341 INFO L276 IsEmpty]: Start isEmpty. Operand 37812 states and 201118 transitions. [2020-10-15 23:12:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:12:08,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:08,344 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:08,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-15 23:12:08,545 INFO L429 AbstractCegarLoop]: === Iteration 55 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash 468950901, now seen corresponding path program 12 times [2020-10-15 23:12:08,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:08,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443832265] [2020-10-15 23:12:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443832265] [2020-10-15 23:12:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380136810] [2020-10-15 23:12:08,643 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:09,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 23:12:09,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:09,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:12:09,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:12:09,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:09,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:12:09,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482053894] [2020-10-15 23:12:09,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:12:09,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:12:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:09,468 INFO L87 Difference]: Start difference. First operand 37812 states and 201118 transitions. Second operand 20 states. [2020-10-15 23:12:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:13,861 INFO L93 Difference]: Finished difference Result 182421 states and 796955 transitions. [2020-10-15 23:12:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:12:13,861 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:12:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:14,385 INFO L225 Difference]: With dead ends: 182421 [2020-10-15 23:12:14,385 INFO L226 Difference]: Without dead ends: 182393 [2020-10-15 23:12:14,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:12:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182393 states. [2020-10-15 23:12:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182393 to 37550. [2020-10-15 23:12:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37550 states. [2020-10-15 23:12:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37550 states to 37550 states and 199683 transitions. [2020-10-15 23:12:18,114 INFO L78 Accepts]: Start accepts. Automaton has 37550 states and 199683 transitions. Word has length 27 [2020-10-15 23:12:18,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:18,115 INFO L481 AbstractCegarLoop]: Abstraction has 37550 states and 199683 transitions. [2020-10-15 23:12:18,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:12:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 37550 states and 199683 transitions. [2020-10-15 23:12:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:12:18,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:18,118 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:18,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-10-15 23:12:18,327 INFO L429 AbstractCegarLoop]: === Iteration 56 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash -528149714, now seen corresponding path program 1 times [2020-10-15 23:12:18,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:18,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591133999] [2020-10-15 23:12:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:12:18,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591133999] [2020-10-15 23:12:18,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465278354] [2020-10-15 23:12:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:18,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:12:18,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:12:18,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:18,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:12:18,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933617639] [2020-10-15 23:12:18,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:12:18,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:18,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:12:18,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:12:18,542 INFO L87 Difference]: Start difference. First operand 37550 states and 199683 transitions. Second operand 12 states. [2020-10-15 23:12:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:19,453 INFO L93 Difference]: Finished difference Result 86095 states and 418282 transitions. [2020-10-15 23:12:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:12:19,454 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:12:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:19,717 INFO L225 Difference]: With dead ends: 86095 [2020-10-15 23:12:19,717 INFO L226 Difference]: Without dead ends: 86043 [2020-10-15 23:12:19,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86043 states. [2020-10-15 23:12:22,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86043 to 39046. [2020-10-15 23:12:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-10-15 23:12:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207545 transitions. [2020-10-15 23:12:22,215 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207545 transitions. Word has length 27 [2020-10-15 23:12:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:22,215 INFO L481 AbstractCegarLoop]: Abstraction has 39046 states and 207545 transitions. [2020-10-15 23:12:22,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:12:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207545 transitions. [2020-10-15 23:12:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:12:22,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:22,219 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:22,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:22,420 INFO L429 AbstractCegarLoop]: === Iteration 57 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:22,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1008837557, now seen corresponding path program 13 times [2020-10-15 23:12:22,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:22,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485651135] [2020-10-15 23:12:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:22,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485651135] [2020-10-15 23:12:22,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712069616] [2020-10-15 23:12:22,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:22,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:12:22,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:22,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:22,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:12:22,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085860327] [2020-10-15 23:12:22,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:12:22,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:22,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:12:22,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:22,793 INFO L87 Difference]: Start difference. First operand 39046 states and 207545 transitions. Second operand 20 states. [2020-10-15 23:12:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:26,522 INFO L93 Difference]: Finished difference Result 182203 states and 795088 transitions. [2020-10-15 23:12:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:12:26,522 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:12:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:27,033 INFO L225 Difference]: With dead ends: 182203 [2020-10-15 23:12:27,034 INFO L226 Difference]: Without dead ends: 182185 [2020-10-15 23:12:27,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:12:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182185 states. [2020-10-15 23:12:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182185 to 38881. [2020-10-15 23:12:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38881 states. [2020-10-15 23:12:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38881 states to 38881 states and 206740 transitions. [2020-10-15 23:12:31,561 INFO L78 Accepts]: Start accepts. Automaton has 38881 states and 206740 transitions. Word has length 27 [2020-10-15 23:12:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:31,561 INFO L481 AbstractCegarLoop]: Abstraction has 38881 states and 206740 transitions. [2020-10-15 23:12:31,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:12:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 38881 states and 206740 transitions. [2020-10-15 23:12:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:12:31,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:31,566 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:31,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:31,780 INFO L429 AbstractCegarLoop]: === Iteration 58 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:31,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:31,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1789198475, now seen corresponding path program 14 times [2020-10-15 23:12:31,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:31,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85927038] [2020-10-15 23:12:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:31,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85927038] [2020-10-15 23:12:31,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371209148] [2020-10-15 23:12:31,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:31,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:12:31,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:31,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:12:31,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:32,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:32,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:12:32,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429366271] [2020-10-15 23:12:32,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:12:32,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:32,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:12:32,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:32,147 INFO L87 Difference]: Start difference. First operand 38881 states and 206740 transitions. Second operand 20 states. [2020-10-15 23:12:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:35,921 INFO L93 Difference]: Finished difference Result 182814 states and 797848 transitions. [2020-10-15 23:12:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:12:35,922 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:12:35,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:36,449 INFO L225 Difference]: With dead ends: 182814 [2020-10-15 23:12:36,449 INFO L226 Difference]: Without dead ends: 182790 [2020-10-15 23:12:36,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:12:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182790 states. [2020-10-15 23:12:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182790 to 38491. [2020-10-15 23:12:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38491 states. [2020-10-15 23:12:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 204715 transitions. [2020-10-15 23:12:40,209 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 204715 transitions. Word has length 27 [2020-10-15 23:12:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:40,209 INFO L481 AbstractCegarLoop]: Abstraction has 38491 states and 204715 transitions. [2020-10-15 23:12:40,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:12:40,209 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 204715 transitions. [2020-10-15 23:12:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:12:40,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:40,213 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:40,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:40,414 INFO L429 AbstractCegarLoop]: === Iteration 59 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:40,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1120567157, now seen corresponding path program 15 times [2020-10-15 23:12:40,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:40,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706834450] [2020-10-15 23:12:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:40,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706834450] [2020-10-15 23:12:40,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492337585] [2020-10-15 23:12:40,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:40,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:12:40,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:40,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:12:40,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:40,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:40,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:12:40,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431777169] [2020-10-15 23:12:40,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:12:40,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:40,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:12:40,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:40,787 INFO L87 Difference]: Start difference. First operand 38491 states and 204715 transitions. Second operand 20 states. [2020-10-15 23:12:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:44,876 INFO L93 Difference]: Finished difference Result 181233 states and 790722 transitions. [2020-10-15 23:12:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:12:44,877 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:12:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:45,393 INFO L225 Difference]: With dead ends: 181233 [2020-10-15 23:12:45,393 INFO L226 Difference]: Without dead ends: 181215 [2020-10-15 23:12:45,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1837 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:12:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181215 states. [2020-10-15 23:12:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181215 to 38192. [2020-10-15 23:12:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38192 states. [2020-10-15 23:12:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38192 states to 38192 states and 203358 transitions. [2020-10-15 23:12:49,081 INFO L78 Accepts]: Start accepts. Automaton has 38192 states and 203358 transitions. Word has length 27 [2020-10-15 23:12:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:49,081 INFO L481 AbstractCegarLoop]: Abstraction has 38192 states and 203358 transitions. [2020-10-15 23:12:49,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:12:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 38192 states and 203358 transitions. [2020-10-15 23:12:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:12:49,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:49,085 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:49,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-15 23:12:49,286 INFO L429 AbstractCegarLoop]: === Iteration 60 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1610215819, now seen corresponding path program 16 times [2020-10-15 23:12:49,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:49,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853483088] [2020-10-15 23:12:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:49,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853483088] [2020-10-15 23:12:49,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689857539] [2020-10-15 23:12:49,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:49,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:12:49,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:49,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:12:49,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:49,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:49,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:12:49,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80239029] [2020-10-15 23:12:49,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:12:49,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:49,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:12:49,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:49,665 INFO L87 Difference]: Start difference. First operand 38192 states and 203358 transitions. Second operand 20 states. [2020-10-15 23:12:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:12:54,288 INFO L93 Difference]: Finished difference Result 181989 states and 794023 transitions. [2020-10-15 23:12:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:12:54,289 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:12:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:12:54,822 INFO L225 Difference]: With dead ends: 181989 [2020-10-15 23:12:54,822 INFO L226 Difference]: Without dead ends: 181965 [2020-10-15 23:12:54,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:12:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181965 states. [2020-10-15 23:12:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181965 to 37802. [2020-10-15 23:12:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37802 states. [2020-10-15 23:12:58,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37802 states to 37802 states and 201333 transitions. [2020-10-15 23:12:58,209 INFO L78 Accepts]: Start accepts. Automaton has 37802 states and 201333 transitions. Word has length 27 [2020-10-15 23:12:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:12:58,210 INFO L481 AbstractCegarLoop]: Abstraction has 37802 states and 201333 transitions. [2020-10-15 23:12:58,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:12:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 37802 states and 201333 transitions. [2020-10-15 23:12:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:12:58,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:12:58,214 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:12:58,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-15 23:12:58,414 INFO L429 AbstractCegarLoop]: === Iteration 61 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:12:58,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:12:58,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1846620555, now seen corresponding path program 17 times [2020-10-15 23:12:58,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:12:58,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483523483] [2020-10-15 23:12:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:12:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:12:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:58,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483523483] [2020-10-15 23:12:58,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20890935] [2020-10-15 23:12:58,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:12:58,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 23:12:58,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:12:58,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:12:58,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:12:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:12:58,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:12:58,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:12:58,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903088742] [2020-10-15 23:12:58,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:12:58,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:12:58,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:12:58,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:12:58,765 INFO L87 Difference]: Start difference. First operand 37802 states and 201333 transitions. Second operand 20 states. [2020-10-15 23:13:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:02,737 INFO L93 Difference]: Finished difference Result 183299 states and 799959 transitions. [2020-10-15 23:13:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:13:02,738 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:13:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:03,251 INFO L225 Difference]: With dead ends: 183299 [2020-10-15 23:13:03,251 INFO L226 Difference]: Without dead ends: 183281 [2020-10-15 23:13:03,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:13:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183281 states. [2020-10-15 23:13:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183281 to 37899. [2020-10-15 23:13:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-10-15 23:13:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 201806 transitions. [2020-10-15 23:13:07,504 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 201806 transitions. Word has length 27 [2020-10-15 23:13:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:07,504 INFO L481 AbstractCegarLoop]: Abstraction has 37899 states and 201806 transitions. [2020-10-15 23:13:07,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:13:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 201806 transitions. [2020-10-15 23:13:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:07,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:07,509 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:07,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-15 23:13:07,709 INFO L429 AbstractCegarLoop]: === Iteration 62 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:07,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1873315275, now seen corresponding path program 18 times [2020-10-15 23:13:07,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:07,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918837290] [2020-10-15 23:13:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:13:07,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918837290] [2020-10-15 23:13:07,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052139715] [2020-10-15 23:13:07,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:13:07,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 23:13:07,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:13:07,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 23:13:07,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:13:08,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:08,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 23:13:08,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49426543] [2020-10-15 23:13:08,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 23:13:08,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:08,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 23:13:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:13:08,085 INFO L87 Difference]: Start difference. First operand 37899 states and 201806 transitions. Second operand 20 states. [2020-10-15 23:13:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:11,974 INFO L93 Difference]: Finished difference Result 182890 states and 798217 transitions. [2020-10-15 23:13:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:13:11,975 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2020-10-15 23:13:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:12,478 INFO L225 Difference]: With dead ends: 182890 [2020-10-15 23:13:12,478 INFO L226 Difference]: Without dead ends: 182862 [2020-10-15 23:13:12,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1287, Invalid=4719, Unknown=0, NotChecked=0, Total=6006 [2020-10-15 23:13:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182862 states. [2020-10-15 23:13:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182862 to 37637. [2020-10-15 23:13:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37637 states. [2020-10-15 23:13:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37637 states to 37637 states and 200371 transitions. [2020-10-15 23:13:16,967 INFO L78 Accepts]: Start accepts. Automaton has 37637 states and 200371 transitions. Word has length 27 [2020-10-15 23:13:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:16,968 INFO L481 AbstractCegarLoop]: Abstraction has 37637 states and 200371 transitions. [2020-10-15 23:13:16,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 23:13:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 37637 states and 200371 transitions. [2020-10-15 23:13:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:16,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:16,972 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:17,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-15 23:13:17,172 INFO L429 AbstractCegarLoop]: === Iteration 63 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:17,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1424539998, now seen corresponding path program 1 times [2020-10-15 23:13:17,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:17,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162677405] [2020-10-15 23:13:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:13:17,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162677405] [2020-10-15 23:13:17,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507165821] [2020-10-15 23:13:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:13:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:17,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:13:17,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:13:17,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:17,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:13:17,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757616874] [2020-10-15 23:13:17,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:13:17,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:17,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:13:17,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:13:17,389 INFO L87 Difference]: Start difference. First operand 37637 states and 200371 transitions. Second operand 12 states. [2020-10-15 23:13:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:18,440 INFO L93 Difference]: Finished difference Result 88848 states and 432494 transitions. [2020-10-15 23:13:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:18,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:13:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:18,711 INFO L225 Difference]: With dead ends: 88848 [2020-10-15 23:13:18,711 INFO L226 Difference]: Without dead ends: 88788 [2020-10-15 23:13:18,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:13:19,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88788 states. [2020-10-15 23:13:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88788 to 39292. [2020-10-15 23:13:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39292 states. [2020-10-15 23:13:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39292 states to 39292 states and 209387 transitions. [2020-10-15 23:13:20,808 INFO L78 Accepts]: Start accepts. Automaton has 39292 states and 209387 transitions. Word has length 27 [2020-10-15 23:13:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:20,809 INFO L481 AbstractCegarLoop]: Abstraction has 39292 states and 209387 transitions. [2020-10-15 23:13:20,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:13:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 39292 states and 209387 transitions. [2020-10-15 23:13:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:20,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:20,813 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:21,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:13:21,014 INFO L429 AbstractCegarLoop]: === Iteration 64 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:21,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:21,015 INFO L82 PathProgramCache]: Analyzing trace with hash -839318940, now seen corresponding path program 1 times [2020-10-15 23:13:21,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:21,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213871640] [2020-10-15 23:13:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:21,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213871640] [2020-10-15 23:13:21,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225662827] [2020-10-15 23:13:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:13:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:21,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 23:13:21,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:13:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:21,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:13:21,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 23:13:21,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152394457] [2020-10-15 23:13:21,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 23:13:21,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:21,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 23:13:21,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-15 23:13:21,221 INFO L87 Difference]: Start difference. First operand 39292 states and 209387 transitions. Second operand 12 states. [2020-10-15 23:13:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:22,161 INFO L93 Difference]: Finished difference Result 92913 states and 454143 transitions. [2020-10-15 23:13:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:13:22,162 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-15 23:13:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:22,455 INFO L225 Difference]: With dead ends: 92913 [2020-10-15 23:13:22,456 INFO L226 Difference]: Without dead ends: 92836 [2020-10-15 23:13:22,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 23:13:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92836 states. [2020-10-15 23:13:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92836 to 40834. [2020-10-15 23:13:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40834 states. [2020-10-15 23:13:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40834 states to 40834 states and 218021 transitions. [2020-10-15 23:13:25,273 INFO L78 Accepts]: Start accepts. Automaton has 40834 states and 218021 transitions. Word has length 27 [2020-10-15 23:13:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:25,274 INFO L481 AbstractCegarLoop]: Abstraction has 40834 states and 218021 transitions. [2020-10-15 23:13:25,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 23:13:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 40834 states and 218021 transitions. [2020-10-15 23:13:25,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:25,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:25,279 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:25,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-15 23:13:25,489 INFO L429 AbstractCegarLoop]: === Iteration 65 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash -947827339, now seen corresponding path program 19 times [2020-10-15 23:13:25,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:25,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520434873] [2020-10-15 23:13:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:25,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520434873] [2020-10-15 23:13:25,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:25,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:13:25,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246257583] [2020-10-15 23:13:25,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:13:25,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:25,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:13:25,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:13:25,589 INFO L87 Difference]: Start difference. First operand 40834 states and 218021 transitions. Second operand 11 states. [2020-10-15 23:13:29,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:29,164 INFO L93 Difference]: Finished difference Result 180696 states and 786321 transitions. [2020-10-15 23:13:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:13:29,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:13:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:29,655 INFO L225 Difference]: With dead ends: 180696 [2020-10-15 23:13:29,655 INFO L226 Difference]: Without dead ends: 180678 [2020-10-15 23:13:29,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:13:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180678 states. [2020-10-15 23:13:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180678 to 40673. [2020-10-15 23:13:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40673 states. [2020-10-15 23:13:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 217228 transitions. [2020-10-15 23:13:34,459 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 217228 transitions. Word has length 27 [2020-10-15 23:13:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:34,460 INFO L481 AbstractCegarLoop]: Abstraction has 40673 states and 217228 transitions. [2020-10-15 23:13:34,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:13:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 217228 transitions. [2020-10-15 23:13:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:34,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:34,465 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:34,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-10-15 23:13:34,465 INFO L429 AbstractCegarLoop]: === Iteration 66 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:34,465 INFO L82 PathProgramCache]: Analyzing trace with hash -963570379, now seen corresponding path program 20 times [2020-10-15 23:13:34,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:34,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012206455] [2020-10-15 23:13:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:34,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012206455] [2020-10-15 23:13:34,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:34,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:13:34,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31483111] [2020-10-15 23:13:34,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:13:34,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:34,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:13:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:13:34,563 INFO L87 Difference]: Start difference. First operand 40673 states and 217228 transitions. Second operand 11 states. [2020-10-15 23:13:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:38,253 INFO L93 Difference]: Finished difference Result 180287 states and 784579 transitions. [2020-10-15 23:13:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:13:38,254 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:13:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:38,753 INFO L225 Difference]: With dead ends: 180287 [2020-10-15 23:13:38,753 INFO L226 Difference]: Without dead ends: 180263 [2020-10-15 23:13:38,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:13:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180263 states. [2020-10-15 23:13:42,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180263 to 40321. [2020-10-15 23:13:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40321 states. [2020-10-15 23:13:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 215433 transitions. [2020-10-15 23:13:42,492 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 215433 transitions. Word has length 27 [2020-10-15 23:13:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:42,493 INFO L481 AbstractCegarLoop]: Abstraction has 40321 states and 215433 transitions. [2020-10-15 23:13:42,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:13:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 215433 transitions. [2020-10-15 23:13:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:42,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:42,498 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:42,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-10-15 23:13:42,498 INFO L429 AbstractCegarLoop]: === Iteration 67 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:42,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:42,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1412510069, now seen corresponding path program 21 times [2020-10-15 23:13:42,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:42,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718038043] [2020-10-15 23:13:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:42,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718038043] [2020-10-15 23:13:42,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:42,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:13:42,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863277767] [2020-10-15 23:13:42,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:13:42,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:42,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:13:42,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:13:42,600 INFO L87 Difference]: Start difference. First operand 40321 states and 215433 transitions. Second operand 11 states. [2020-10-15 23:13:46,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:46,729 INFO L93 Difference]: Finished difference Result 179815 states and 782456 transitions. [2020-10-15 23:13:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:13:46,730 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:13:46,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:47,221 INFO L225 Difference]: With dead ends: 179815 [2020-10-15 23:13:47,221 INFO L226 Difference]: Without dead ends: 179797 [2020-10-15 23:13:47,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:13:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179797 states. [2020-10-15 23:13:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179797 to 40030. [2020-10-15 23:13:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40030 states. [2020-10-15 23:13:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40030 states to 40030 states and 214096 transitions. [2020-10-15 23:13:50,861 INFO L78 Accepts]: Start accepts. Automaton has 40030 states and 214096 transitions. Word has length 27 [2020-10-15 23:13:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:50,861 INFO L481 AbstractCegarLoop]: Abstraction has 40030 states and 214096 transitions. [2020-10-15 23:13:50,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:13:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 40030 states and 214096 transitions. [2020-10-15 23:13:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:50,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:50,866 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:50,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-10-15 23:13:50,866 INFO L429 AbstractCegarLoop]: === Iteration 68 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:50,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1385815349, now seen corresponding path program 22 times [2020-10-15 23:13:50,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:50,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740726489] [2020-10-15 23:13:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:50,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740726489] [2020-10-15 23:13:50,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:50,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:13:50,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076876168] [2020-10-15 23:13:50,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:13:50,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:13:50,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:13:50,979 INFO L87 Difference]: Start difference. First operand 40030 states and 214096 transitions. Second operand 11 states. [2020-10-15 23:13:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:13:54,749 INFO L93 Difference]: Finished difference Result 179585 states and 781438 transitions. [2020-10-15 23:13:54,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:13:54,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:13:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:13:55,284 INFO L225 Difference]: With dead ends: 179585 [2020-10-15 23:13:55,284 INFO L226 Difference]: Without dead ends: 179561 [2020-10-15 23:13:55,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:13:57,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179561 states. [2020-10-15 23:13:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179561 to 39678. [2020-10-15 23:13:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39678 states. [2020-10-15 23:13:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39678 states to 39678 states and 212301 transitions. [2020-10-15 23:13:59,460 INFO L78 Accepts]: Start accepts. Automaton has 39678 states and 212301 transitions. Word has length 27 [2020-10-15 23:13:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:13:59,461 INFO L481 AbstractCegarLoop]: Abstraction has 39678 states and 212301 transitions. [2020-10-15 23:13:59,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:13:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 39678 states and 212301 transitions. [2020-10-15 23:13:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:13:59,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:13:59,466 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:13:59,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-10-15 23:13:59,466 INFO L429 AbstractCegarLoop]: === Iteration 69 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:13:59,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:13:59,466 INFO L82 PathProgramCache]: Analyzing trace with hash -847392523, now seen corresponding path program 23 times [2020-10-15 23:13:59,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:13:59,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426785304] [2020-10-15 23:13:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:13:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:13:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:13:59,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426785304] [2020-10-15 23:13:59,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:13:59,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:13:59,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86654402] [2020-10-15 23:13:59,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:13:59,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:13:59,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:13:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:13:59,571 INFO L87 Difference]: Start difference. First operand 39678 states and 212301 transitions. Second operand 11 states. [2020-10-15 23:14:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:03,409 INFO L93 Difference]: Finished difference Result 179113 states and 779315 transitions. [2020-10-15 23:14:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:14:03,410 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:14:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:03,905 INFO L225 Difference]: With dead ends: 179113 [2020-10-15 23:14:03,906 INFO L226 Difference]: Without dead ends: 179095 [2020-10-15 23:14:03,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:14:05,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179095 states. [2020-10-15 23:14:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179095 to 39387. [2020-10-15 23:14:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39387 states. [2020-10-15 23:14:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39387 states to 39387 states and 210964 transitions. [2020-10-15 23:14:08,314 INFO L78 Accepts]: Start accepts. Automaton has 39387 states and 210964 transitions. Word has length 27 [2020-10-15 23:14:08,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:08,314 INFO L481 AbstractCegarLoop]: Abstraction has 39387 states and 210964 transitions. [2020-10-15 23:14:08,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:14:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 39387 states and 210964 transitions. [2020-10-15 23:14:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:14:08,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:08,319 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:08,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-10-15 23:14:08,320 INFO L429 AbstractCegarLoop]: === Iteration 70 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:08,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:08,320 INFO L82 PathProgramCache]: Analyzing trace with hash -858344203, now seen corresponding path program 24 times [2020-10-15 23:14:08,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:08,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403562554] [2020-10-15 23:14:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:14:08,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403562554] [2020-10-15 23:14:08,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:08,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:14:08,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858853473] [2020-10-15 23:14:08,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 23:14:08,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:08,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 23:14:08,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:14:08,417 INFO L87 Difference]: Start difference. First operand 39387 states and 210964 transitions. Second operand 11 states. [2020-10-15 23:14:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:12,126 INFO L93 Difference]: Finished difference Result 178704 states and 777573 transitions. [2020-10-15 23:14:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-15 23:14:12,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-15 23:14:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:12,626 INFO L225 Difference]: With dead ends: 178704 [2020-10-15 23:14:12,626 INFO L226 Difference]: Without dead ends: 178675 [2020-10-15 23:14:12,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 23:14:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178675 states. [2020-10-15 23:14:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178675 to 38805. [2020-10-15 23:14:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38805 states. [2020-10-15 23:14:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 208284 transitions. [2020-10-15 23:14:17,264 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 208284 transitions. Word has length 27 [2020-10-15 23:14:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:17,264 INFO L481 AbstractCegarLoop]: Abstraction has 38805 states and 208284 transitions. [2020-10-15 23:14:17,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 23:14:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 208284 transitions. [2020-10-15 23:14:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:14:17,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:17,270 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:17,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-10-15 23:14:17,270 INFO L429 AbstractCegarLoop]: === Iteration 71 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1294328210, now seen corresponding path program 2 times [2020-10-15 23:14:17,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:17,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767730425] [2020-10-15 23:14:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:14:17,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767730425] [2020-10-15 23:14:17,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:17,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:14:17,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001726790] [2020-10-15 23:14:17,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:14:17,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:17,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:14:17,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:17,331 INFO L87 Difference]: Start difference. First operand 38805 states and 208284 transitions. Second operand 7 states. [2020-10-15 23:14:18,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:18,317 INFO L93 Difference]: Finished difference Result 90966 states and 445145 transitions. [2020-10-15 23:14:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:18,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:14:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:18,592 INFO L225 Difference]: With dead ends: 90966 [2020-10-15 23:14:18,592 INFO L226 Difference]: Without dead ends: 90889 [2020-10-15 23:14:18,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:14:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90889 states. [2020-10-15 23:14:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90889 to 40453. [2020-10-15 23:14:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40453 states. [2020-10-15 23:14:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 217061 transitions. [2020-10-15 23:14:20,745 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 217061 transitions. Word has length 27 [2020-10-15 23:14:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:20,745 INFO L481 AbstractCegarLoop]: Abstraction has 40453 states and 217061 transitions. [2020-10-15 23:14:20,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:14:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 217061 transitions. [2020-10-15 23:14:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:14:20,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:20,750 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:20,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-10-15 23:14:20,750 INFO L429 AbstractCegarLoop]: === Iteration 72 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1294339618, now seen corresponding path program 2 times [2020-10-15 23:14:20,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:20,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186760525] [2020-10-15 23:14:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:14:20,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186760525] [2020-10-15 23:14:20,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:20,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:14:20,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667213058] [2020-10-15 23:14:20,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:14:20,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:20,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:14:20,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:20,804 INFO L87 Difference]: Start difference. First operand 40453 states and 217061 transitions. Second operand 7 states. [2020-10-15 23:14:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:21,667 INFO L93 Difference]: Finished difference Result 91560 states and 447373 transitions. [2020-10-15 23:14:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:21,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:14:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:21,941 INFO L225 Difference]: With dead ends: 91560 [2020-10-15 23:14:21,941 INFO L226 Difference]: Without dead ends: 91483 [2020-10-15 23:14:21,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:14:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91483 states. [2020-10-15 23:14:23,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91483 to 41467. [2020-10-15 23:14:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41467 states. [2020-10-15 23:14:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41467 states to 41467 states and 222391 transitions. [2020-10-15 23:14:25,023 INFO L78 Accepts]: Start accepts. Automaton has 41467 states and 222391 transitions. Word has length 27 [2020-10-15 23:14:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:25,023 INFO L481 AbstractCegarLoop]: Abstraction has 41467 states and 222391 transitions. [2020-10-15 23:14:25,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:14:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 41467 states and 222391 transitions. [2020-10-15 23:14:25,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:14:25,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:25,029 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:25,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-10-15 23:14:25,029 INFO L429 AbstractCegarLoop]: === Iteration 73 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:25,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:25,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1294356017, now seen corresponding path program 2 times [2020-10-15 23:14:25,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:25,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748583370] [2020-10-15 23:14:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:14:25,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748583370] [2020-10-15 23:14:25,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:25,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:14:25,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879977896] [2020-10-15 23:14:25,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:14:25,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:25,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:14:25,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:25,090 INFO L87 Difference]: Start difference. First operand 41467 states and 222391 transitions. Second operand 7 states. [2020-10-15 23:14:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:26,017 INFO L93 Difference]: Finished difference Result 92674 states and 452263 transitions. [2020-10-15 23:14:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:26,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:14:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:26,286 INFO L225 Difference]: With dead ends: 92674 [2020-10-15 23:14:26,286 INFO L226 Difference]: Without dead ends: 92597 [2020-10-15 23:14:26,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:14:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92597 states. [2020-10-15 23:14:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92597 to 42564. [2020-10-15 23:14:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42564 states. [2020-10-15 23:14:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42564 states to 42564 states and 227862 transitions. [2020-10-15 23:14:28,515 INFO L78 Accepts]: Start accepts. Automaton has 42564 states and 227862 transitions. Word has length 27 [2020-10-15 23:14:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:28,515 INFO L481 AbstractCegarLoop]: Abstraction has 42564 states and 227862 transitions. [2020-10-15 23:14:28,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:14:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 42564 states and 227862 transitions. [2020-10-15 23:14:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 23:14:28,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:28,520 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:28,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-10-15 23:14:28,520 INFO L429 AbstractCegarLoop]: === Iteration 74 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:28,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:28,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1294335650, now seen corresponding path program 2 times [2020-10-15 23:14:28,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:28,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987782073] [2020-10-15 23:14:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:14:28,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987782073] [2020-10-15 23:14:28,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:14:28,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:14:28,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227727382] [2020-10-15 23:14:28,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 23:14:28,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:28,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 23:14:28,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:14:28,581 INFO L87 Difference]: Start difference. First operand 42564 states and 227862 transitions. Second operand 7 states. [2020-10-15 23:14:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:29,503 INFO L93 Difference]: Finished difference Result 93922 states and 458312 transitions. [2020-10-15 23:14:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 23:14:29,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-15 23:14:29,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:29,792 INFO L225 Difference]: With dead ends: 93922 [2020-10-15 23:14:29,793 INFO L226 Difference]: Without dead ends: 93845 [2020-10-15 23:14:29,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:14:30,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93845 states. [2020-10-15 23:14:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93845 to 43794. [2020-10-15 23:14:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-10-15 23:14:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-10-15 23:14:32,173 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-10-15 23:14:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:32,173 INFO L481 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-10-15 23:14:32,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 23:14:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-10-15 23:14:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:14:32,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:32,181 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:32,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-10-15 23:14:32,181 INFO L429 AbstractCegarLoop]: === Iteration 75 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:32,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1919686780, now seen corresponding path program 1 times [2020-10-15 23:14:32,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:32,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469875343] [2020-10-15 23:14:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:32,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469875343] [2020-10-15 23:14:32,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280593508] [2020-10-15 23:14:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:32,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:32,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:32,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:32,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:32,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656988249] [2020-10-15 23:14:32,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:32,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:32,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:32,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:32,501 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 16 states. [2020-10-15 23:14:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:34,857 INFO L93 Difference]: Finished difference Result 140781 states and 654227 transitions. [2020-10-15 23:14:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:34,858 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:14:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:35,278 INFO L225 Difference]: With dead ends: 140781 [2020-10-15 23:14:35,279 INFO L226 Difference]: Without dead ends: 140737 [2020-10-15 23:14:35,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:14:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140737 states. [2020-10-15 23:14:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140737 to 43602. [2020-10-15 23:14:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-10-15 23:14:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 232379 transitions. [2020-10-15 23:14:38,403 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 232379 transitions. Word has length 29 [2020-10-15 23:14:38,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:38,404 INFO L481 AbstractCegarLoop]: Abstraction has 43602 states and 232379 transitions. [2020-10-15 23:14:38,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 232379 transitions. [2020-10-15 23:14:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:14:38,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:38,412 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:38,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:38,612 INFO L429 AbstractCegarLoop]: === Iteration 76 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:38,613 INFO L82 PathProgramCache]: Analyzing trace with hash -422590804, now seen corresponding path program 1 times [2020-10-15 23:14:38,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:38,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003750789] [2020-10-15 23:14:38,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:14:38,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003750789] [2020-10-15 23:14:38,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843961362] [2020-10-15 23:14:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:38,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:38,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:14:38,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:38,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:38,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645512953] [2020-10-15 23:14:38,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:38,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:38,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:38,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:38,950 INFO L87 Difference]: Start difference. First operand 43602 states and 232379 transitions. Second operand 16 states. [2020-10-15 23:14:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:40,818 INFO L93 Difference]: Finished difference Result 139468 states and 647412 transitions. [2020-10-15 23:14:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:40,818 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:14:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:41,207 INFO L225 Difference]: With dead ends: 139468 [2020-10-15 23:14:41,208 INFO L226 Difference]: Without dead ends: 139424 [2020-10-15 23:14:41,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:14:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139424 states. [2020-10-15 23:14:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139424 to 43506. [2020-10-15 23:14:44,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43506 states. [2020-10-15 23:14:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43506 states to 43506 states and 231546 transitions. [2020-10-15 23:14:44,703 INFO L78 Accepts]: Start accepts. Automaton has 43506 states and 231546 transitions. Word has length 29 [2020-10-15 23:14:44,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:44,703 INFO L481 AbstractCegarLoop]: Abstraction has 43506 states and 231546 transitions. [2020-10-15 23:14:44,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand 43506 states and 231546 transitions. [2020-10-15 23:14:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:14:44,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:44,710 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:44,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:44,911 INFO L429 AbstractCegarLoop]: === Iteration 77 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:44,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:44,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1608517554, now seen corresponding path program 1 times [2020-10-15 23:14:44,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:44,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063256282] [2020-10-15 23:14:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:44,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063256282] [2020-10-15 23:14:44,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943796821] [2020-10-15 23:14:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:45,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:45,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:14:45,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:45,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:45,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309017941] [2020-10-15 23:14:45,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:45,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:45,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:45,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:45,201 INFO L87 Difference]: Start difference. First operand 43506 states and 231546 transitions. Second operand 16 states. [2020-10-15 23:14:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:47,136 INFO L93 Difference]: Finished difference Result 138170 states and 641113 transitions. [2020-10-15 23:14:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:47,137 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:14:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:47,547 INFO L225 Difference]: With dead ends: 138170 [2020-10-15 23:14:47,547 INFO L226 Difference]: Without dead ends: 138126 [2020-10-15 23:14:47,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:14:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138126 states. [2020-10-15 23:14:50,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138126 to 43481. [2020-10-15 23:14:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2020-10-15 23:14:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 231123 transitions. [2020-10-15 23:14:50,609 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 231123 transitions. Word has length 29 [2020-10-15 23:14:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:50,609 INFO L481 AbstractCegarLoop]: Abstraction has 43481 states and 231123 transitions. [2020-10-15 23:14:50,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 231123 transitions. [2020-10-15 23:14:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:14:50,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:50,617 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:50,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:50,818 INFO L429 AbstractCegarLoop]: === Iteration 78 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1153508284, now seen corresponding path program 2 times [2020-10-15 23:14:50,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:50,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330678011] [2020-10-15 23:14:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:14:50,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330678011] [2020-10-15 23:14:50,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510408985] [2020-10-15 23:14:50,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:50,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:14:50,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:14:50,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:50,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:14:51,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:51,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:51,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573950553] [2020-10-15 23:14:51,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:51,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:51,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:51,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:51,114 INFO L87 Difference]: Start difference. First operand 43481 states and 231123 transitions. Second operand 16 states. [2020-10-15 23:14:51,494 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-15 23:14:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:53,503 INFO L93 Difference]: Finished difference Result 135919 states and 629813 transitions. [2020-10-15 23:14:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:53,504 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:14:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:14:53,899 INFO L225 Difference]: With dead ends: 135919 [2020-10-15 23:14:53,899 INFO L226 Difference]: Without dead ends: 135873 [2020-10-15 23:14:53,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:14:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135873 states. [2020-10-15 23:14:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135873 to 43684. [2020-10-15 23:14:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43684 states. [2020-10-15 23:14:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43684 states to 43684 states and 232067 transitions. [2020-10-15 23:14:56,915 INFO L78 Accepts]: Start accepts. Automaton has 43684 states and 232067 transitions. Word has length 29 [2020-10-15 23:14:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:14:56,915 INFO L481 AbstractCegarLoop]: Abstraction has 43684 states and 232067 transitions. [2020-10-15 23:14:56,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:14:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 43684 states and 232067 transitions. [2020-10-15 23:14:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:14:56,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:14:56,923 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:14:57,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:57,123 INFO L429 AbstractCegarLoop]: === Iteration 79 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:14:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:14:57,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1153496876, now seen corresponding path program 2 times [2020-10-15 23:14:57,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:14:57,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300138822] [2020-10-15 23:14:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:14:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:14:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:14:57,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300138822] [2020-10-15 23:14:57,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080661507] [2020-10-15 23:14:57,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:14:57,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:14:57,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:14:57,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:14:57,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:14:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:14:57,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:14:57,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:14:57,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34055168] [2020-10-15 23:14:57,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:14:57,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:14:57,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:14:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:14:57,439 INFO L87 Difference]: Start difference. First operand 43684 states and 232067 transitions. Second operand 16 states. [2020-10-15 23:14:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:14:59,929 INFO L93 Difference]: Finished difference Result 134838 states and 624786 transitions. [2020-10-15 23:14:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:14:59,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:14:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:00,340 INFO L225 Difference]: With dead ends: 134838 [2020-10-15 23:15:00,340 INFO L226 Difference]: Without dead ends: 134792 [2020-10-15 23:15:00,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134792 states. [2020-10-15 23:15:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134792 to 43622. [2020-10-15 23:15:03,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43622 states. [2020-10-15 23:15:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43622 states to 43622 states and 231628 transitions. [2020-10-15 23:15:04,012 INFO L78 Accepts]: Start accepts. Automaton has 43622 states and 231628 transitions. Word has length 29 [2020-10-15 23:15:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:04,012 INFO L481 AbstractCegarLoop]: Abstraction has 43622 states and 231628 transitions. [2020-10-15 23:15:04,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 43622 states and 231628 transitions. [2020-10-15 23:15:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:04,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:04,020 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:04,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:04,228 INFO L429 AbstractCegarLoop]: === Iteration 80 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:04,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:04,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1153500844, now seen corresponding path program 2 times [2020-10-15 23:15:04,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:04,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567434373] [2020-10-15 23:15:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:15:04,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567434373] [2020-10-15 23:15:04,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945775118] [2020-10-15 23:15:04,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:04,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:15:04,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:04,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:04,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-15 23:15:04,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:04,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:04,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137839257] [2020-10-15 23:15:04,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:04,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:04,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:04,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:04,532 INFO L87 Difference]: Start difference. First operand 43622 states and 231628 transitions. Second operand 16 states. [2020-10-15 23:15:06,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:06,584 INFO L93 Difference]: Finished difference Result 133406 states and 618320 transitions. [2020-10-15 23:15:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:06,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:06,976 INFO L225 Difference]: With dead ends: 133406 [2020-10-15 23:15:06,976 INFO L226 Difference]: Without dead ends: 133360 [2020-10-15 23:15:06,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133360 states. [2020-10-15 23:15:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133360 to 43128. [2020-10-15 23:15:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-10-15 23:15:09,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-10-15 23:15:09,973 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-10-15 23:15:09,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:09,973 INFO L481 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-10-15 23:15:09,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-10-15 23:15:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:09,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:09,981 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:10,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:10,182 INFO L429 AbstractCegarLoop]: === Iteration 81 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:10,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1591871556, now seen corresponding path program 3 times [2020-10-15 23:15:10,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:10,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764176154] [2020-10-15 23:15:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:10,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764176154] [2020-10-15 23:15:10,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410463853] [2020-10-15 23:15:10,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:10,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-15 23:15:10,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:10,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:10,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:10,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:10,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902639871] [2020-10-15 23:15:10,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:10,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:10,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:10,488 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 16 states. [2020-10-15 23:15:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:12,800 INFO L93 Difference]: Finished difference Result 135323 states and 626681 transitions. [2020-10-15 23:15:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:12,801 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:13,182 INFO L225 Difference]: With dead ends: 135323 [2020-10-15 23:15:13,182 INFO L226 Difference]: Without dead ends: 135279 [2020-10-15 23:15:13,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135279 states. [2020-10-15 23:15:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135279 to 42900. [2020-10-15 23:15:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42900 states. [2020-10-15 23:15:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42900 states to 42900 states and 227522 transitions. [2020-10-15 23:15:16,023 INFO L78 Accepts]: Start accepts. Automaton has 42900 states and 227522 transitions. Word has length 29 [2020-10-15 23:15:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:16,023 INFO L481 AbstractCegarLoop]: Abstraction has 42900 states and 227522 transitions. [2020-10-15 23:15:16,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 42900 states and 227522 transitions. [2020-10-15 23:15:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:16,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:16,030 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:16,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:16,231 INFO L429 AbstractCegarLoop]: === Iteration 82 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:16,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1973162059, now seen corresponding path program 1 times [2020-10-15 23:15:16,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:16,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629654908] [2020-10-15 23:15:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:16,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629654908] [2020-10-15 23:15:16,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915956540] [2020-10-15 23:15:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:16,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:16,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:16,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:16,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:16,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300757928] [2020-10-15 23:15:16,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:16,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:16,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:16,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:16,530 INFO L87 Difference]: Start difference. First operand 42900 states and 227522 transitions. Second operand 16 states. [2020-10-15 23:15:18,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:18,405 INFO L93 Difference]: Finished difference Result 141153 states and 654921 transitions. [2020-10-15 23:15:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:18,406 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:18,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:18,809 INFO L225 Difference]: With dead ends: 141153 [2020-10-15 23:15:18,809 INFO L226 Difference]: Without dead ends: 141109 [2020-10-15 23:15:18,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:20,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141109 states. [2020-10-15 23:15:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141109 to 42878. [2020-10-15 23:15:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42878 states. [2020-10-15 23:15:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42878 states to 42878 states and 227112 transitions. [2020-10-15 23:15:22,458 INFO L78 Accepts]: Start accepts. Automaton has 42878 states and 227112 transitions. Word has length 29 [2020-10-15 23:15:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:22,459 INFO L481 AbstractCegarLoop]: Abstraction has 42878 states and 227112 transitions. [2020-10-15 23:15:22,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 42878 states and 227112 transitions. [2020-10-15 23:15:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:22,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:22,467 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:22,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-15 23:15:22,668 INFO L429 AbstractCegarLoop]: === Iteration 83 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:22,668 INFO L82 PathProgramCache]: Analyzing trace with hash -290696879, now seen corresponding path program 1 times [2020-10-15 23:15:22,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:22,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42350557] [2020-10-15 23:15:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:22,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42350557] [2020-10-15 23:15:22,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733099125] [2020-10-15 23:15:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:22,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:22,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:15:22,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:22,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:22,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863113631] [2020-10-15 23:15:22,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:22,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:22,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:22,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:22,970 INFO L87 Difference]: Start difference. First operand 42878 states and 227112 transitions. Second operand 16 states. [2020-10-15 23:15:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:24,873 INFO L93 Difference]: Finished difference Result 139558 states and 647187 transitions. [2020-10-15 23:15:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:24,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:25,275 INFO L225 Difference]: With dead ends: 139558 [2020-10-15 23:15:25,275 INFO L226 Difference]: Without dead ends: 139514 [2020-10-15 23:15:25,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139514 states. [2020-10-15 23:15:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139514 to 42856. [2020-10-15 23:15:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42856 states. [2020-10-15 23:15:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42856 states to 42856 states and 226689 transitions. [2020-10-15 23:15:28,160 INFO L78 Accepts]: Start accepts. Automaton has 42856 states and 226689 transitions. Word has length 29 [2020-10-15 23:15:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:28,160 INFO L481 AbstractCegarLoop]: Abstraction has 42856 states and 226689 transitions. [2020-10-15 23:15:28,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 42856 states and 226689 transitions. [2020-10-15 23:15:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:28,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:28,168 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:28,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-15 23:15:28,369 INFO L429 AbstractCegarLoop]: === Iteration 84 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash -745717557, now seen corresponding path program 2 times [2020-10-15 23:15:28,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:28,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251698960] [2020-10-15 23:15:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:28,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251698960] [2020-10-15 23:15:28,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891491878] [2020-10-15 23:15:28,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:28,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:15:28,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:28,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:28,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:28,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:28,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:28,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604196469] [2020-10-15 23:15:28,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:28,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:28,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:28,662 INFO L87 Difference]: Start difference. First operand 42856 states and 226689 transitions. Second operand 16 states. [2020-10-15 23:15:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:31,184 INFO L93 Difference]: Finished difference Result 137680 states and 637585 transitions. [2020-10-15 23:15:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:31,185 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:31,600 INFO L225 Difference]: With dead ends: 137680 [2020-10-15 23:15:31,601 INFO L226 Difference]: Without dead ends: 137630 [2020-10-15 23:15:31,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137630 states. [2020-10-15 23:15:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137630 to 42997. [2020-10-15 23:15:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42997 states. [2020-10-15 23:15:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 227356 transitions. [2020-10-15 23:15:34,594 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 227356 transitions. Word has length 29 [2020-10-15 23:15:34,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:34,595 INFO L481 AbstractCegarLoop]: Abstraction has 42997 states and 227356 transitions. [2020-10-15 23:15:34,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 227356 transitions. [2020-10-15 23:15:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:34,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:34,603 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:34,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-15 23:15:34,803 INFO L429 AbstractCegarLoop]: === Iteration 85 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:34,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:34,804 INFO L82 PathProgramCache]: Analyzing trace with hash -745733956, now seen corresponding path program 4 times [2020-10-15 23:15:34,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:34,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116607942] [2020-10-15 23:15:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:34,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116607942] [2020-10-15 23:15:34,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056428145] [2020-10-15 23:15:34,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:34,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:15:34,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:34,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:35,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:35,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:35,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537821365] [2020-10-15 23:15:35,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:35,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:35,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:35,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:35,107 INFO L87 Difference]: Start difference. First operand 42997 states and 227356 transitions. Second operand 16 states. [2020-10-15 23:15:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:37,263 INFO L93 Difference]: Finished difference Result 134425 states and 621844 transitions. [2020-10-15 23:15:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:37,264 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:37,644 INFO L225 Difference]: With dead ends: 134425 [2020-10-15 23:15:37,644 INFO L226 Difference]: Without dead ends: 134379 [2020-10-15 23:15:37,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134379 states. [2020-10-15 23:15:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134379 to 42935. [2020-10-15 23:15:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42935 states. [2020-10-15 23:15:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42935 states to 42935 states and 226917 transitions. [2020-10-15 23:15:41,247 INFO L78 Accepts]: Start accepts. Automaton has 42935 states and 226917 transitions. Word has length 29 [2020-10-15 23:15:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:41,248 INFO L481 AbstractCegarLoop]: Abstraction has 42935 states and 226917 transitions. [2020-10-15 23:15:41,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 42935 states and 226917 transitions. [2020-10-15 23:15:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:41,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:41,255 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:41,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:41,456 INFO L429 AbstractCegarLoop]: === Iteration 86 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:41,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:41,457 INFO L82 PathProgramCache]: Analyzing trace with hash -745713589, now seen corresponding path program 2 times [2020-10-15 23:15:41,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:41,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739091123] [2020-10-15 23:15:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:41,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739091123] [2020-10-15 23:15:41,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043754237] [2020-10-15 23:15:41,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:41,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:15:41,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:41,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:41,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-15 23:15:41,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:41,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:41,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975965686] [2020-10-15 23:15:41,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:41,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:41,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:41,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:41,756 INFO L87 Difference]: Start difference. First operand 42935 states and 226917 transitions. Second operand 16 states. [2020-10-15 23:15:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:43,719 INFO L93 Difference]: Finished difference Result 135137 states and 625997 transitions. [2020-10-15 23:15:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:43,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:44,123 INFO L225 Difference]: With dead ends: 135137 [2020-10-15 23:15:44,123 INFO L226 Difference]: Without dead ends: 135087 [2020-10-15 23:15:44,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:45,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135087 states. [2020-10-15 23:15:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135087 to 42336. [2020-10-15 23:15:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2020-10-15 23:15:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 223739 transitions. [2020-10-15 23:15:47,084 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 223739 transitions. Word has length 29 [2020-10-15 23:15:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:47,084 INFO L481 AbstractCegarLoop]: Abstraction has 42336 states and 223739 transitions. [2020-10-15 23:15:47,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:47,084 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 223739 transitions. [2020-10-15 23:15:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:47,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:47,092 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:47,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2020-10-15 23:15:47,298 INFO L429 AbstractCegarLoop]: === Iteration 87 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1865067275, now seen corresponding path program 3 times [2020-10-15 23:15:47,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:47,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016046179] [2020-10-15 23:15:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:15:47,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016046179] [2020-10-15 23:15:47,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597110975] [2020-10-15 23:15:47,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:47,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:15:47,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:47,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:47,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:15:47,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:47,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:47,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256497641] [2020-10-15 23:15:47,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:47,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:47,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:47,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:47,596 INFO L87 Difference]: Start difference. First operand 42336 states and 223739 transitions. Second operand 16 states. [2020-10-15 23:15:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:49,538 INFO L93 Difference]: Finished difference Result 136349 states and 630987 transitions. [2020-10-15 23:15:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:49,539 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:50,669 INFO L225 Difference]: With dead ends: 136349 [2020-10-15 23:15:50,669 INFO L226 Difference]: Without dead ends: 136305 [2020-10-15 23:15:50,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136305 states. [2020-10-15 23:15:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136305 to 42186. [2020-10-15 23:15:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42186 states. [2020-10-15 23:15:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42186 states to 42186 states and 222832 transitions. [2020-10-15 23:15:53,523 INFO L78 Accepts]: Start accepts. Automaton has 42186 states and 222832 transitions. Word has length 29 [2020-10-15 23:15:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:15:53,523 INFO L481 AbstractCegarLoop]: Abstraction has 42186 states and 222832 transitions. [2020-10-15 23:15:53,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:15:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 42186 states and 222832 transitions. [2020-10-15 23:15:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:15:53,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:15:53,532 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:15:53,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-15 23:15:53,738 INFO L429 AbstractCegarLoop]: === Iteration 88 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:15:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:15:53,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2041985324, now seen corresponding path program 3 times [2020-10-15 23:15:53,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:15:53,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391767065] [2020-10-15 23:15:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:15:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:15:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:15:53,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391767065] [2020-10-15 23:15:53,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984825851] [2020-10-15 23:15:53,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:15:53,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 23:15:53,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:15:53,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:15:53,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:15:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:15:54,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:15:54,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:15:54,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909195243] [2020-10-15 23:15:54,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:15:54,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:15:54,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:15:54,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:15:54,042 INFO L87 Difference]: Start difference. First operand 42186 states and 222832 transitions. Second operand 16 states. [2020-10-15 23:15:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:15:56,217 INFO L93 Difference]: Finished difference Result 135812 states and 628090 transitions. [2020-10-15 23:15:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:15:56,218 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:15:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:15:56,612 INFO L225 Difference]: With dead ends: 135812 [2020-10-15 23:15:56,612 INFO L226 Difference]: Without dead ends: 135768 [2020-10-15 23:15:56,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:15:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135768 states. [2020-10-15 23:16:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135768 to 42079. [2020-10-15 23:16:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42079 states. [2020-10-15 23:16:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42079 states to 42079 states and 222233 transitions. [2020-10-15 23:16:00,455 INFO L78 Accepts]: Start accepts. Automaton has 42079 states and 222233 transitions. Word has length 29 [2020-10-15 23:16:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:00,456 INFO L481 AbstractCegarLoop]: Abstraction has 42079 states and 222233 transitions. [2020-10-15 23:16:00,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 42079 states and 222233 transitions. [2020-10-15 23:16:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:00,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:00,464 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:00,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:00,664 INFO L429 AbstractCegarLoop]: === Iteration 89 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash -656591999, now seen corresponding path program 1 times [2020-10-15 23:16:00,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:00,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869259538] [2020-10-15 23:16:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:16:00,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869259538] [2020-10-15 23:16:00,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732588535] [2020-10-15 23:16:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 23:16:00,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:00,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:00,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291833467] [2020-10-15 23:16:00,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:00,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:00,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:00,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:00,962 INFO L87 Difference]: Start difference. First operand 42079 states and 222233 transitions. Second operand 16 states. [2020-10-15 23:16:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:02,999 INFO L93 Difference]: Finished difference Result 139249 states and 646209 transitions. [2020-10-15 23:16:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:03,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:03,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:03,408 INFO L225 Difference]: With dead ends: 139249 [2020-10-15 23:16:03,408 INFO L226 Difference]: Without dead ends: 139205 [2020-10-15 23:16:03,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139205 states. [2020-10-15 23:16:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139205 to 42066. [2020-10-15 23:16:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42066 states. [2020-10-15 23:16:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42066 states to 42066 states and 221912 transitions. [2020-10-15 23:16:06,297 INFO L78 Accepts]: Start accepts. Automaton has 42066 states and 221912 transitions. Word has length 29 [2020-10-15 23:16:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:06,298 INFO L481 AbstractCegarLoop]: Abstraction has 42066 states and 221912 transitions. [2020-10-15 23:16:06,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 42066 states and 221912 transitions. [2020-10-15 23:16:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:06,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:06,306 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:06,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:06,507 INFO L429 AbstractCegarLoop]: === Iteration 90 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1111601269, now seen corresponding path program 4 times [2020-10-15 23:16:06,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:06,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055948623] [2020-10-15 23:16:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:06,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055948623] [2020-10-15 23:16:06,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475899407] [2020-10-15 23:16:06,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:06,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:16:06,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:06,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:06,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:06,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:06,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:06,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905535750] [2020-10-15 23:16:06,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:06,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:06,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:06,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:06,820 INFO L87 Difference]: Start difference. First operand 42066 states and 221912 transitions. Second operand 16 states. [2020-10-15 23:16:08,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:08,940 INFO L93 Difference]: Finished difference Result 136710 states and 632229 transitions. [2020-10-15 23:16:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:08,941 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:09,344 INFO L225 Difference]: With dead ends: 136710 [2020-10-15 23:16:09,344 INFO L226 Difference]: Without dead ends: 136660 [2020-10-15 23:16:09,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:11,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136660 states. [2020-10-15 23:16:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136660 to 42207. [2020-10-15 23:16:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42207 states. [2020-10-15 23:16:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42207 states to 42207 states and 222579 transitions. [2020-10-15 23:16:12,816 INFO L78 Accepts]: Start accepts. Automaton has 42207 states and 222579 transitions. Word has length 29 [2020-10-15 23:16:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:12,816 INFO L481 AbstractCegarLoop]: Abstraction has 42207 states and 222579 transitions. [2020-10-15 23:16:12,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 42207 states and 222579 transitions. [2020-10-15 23:16:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:12,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:12,825 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:13,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:13,026 INFO L429 AbstractCegarLoop]: === Iteration 91 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:13,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1111629076, now seen corresponding path program 4 times [2020-10-15 23:16:13,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:13,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256047668] [2020-10-15 23:16:13,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:13,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256047668] [2020-10-15 23:16:13,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946089598] [2020-10-15 23:16:13,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:13,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:16:13,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:13,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:13,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:13,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:13,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:13,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99529995] [2020-10-15 23:16:13,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:13,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:13,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:13,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:13,335 INFO L87 Difference]: Start difference. First operand 42207 states and 222579 transitions. Second operand 16 states. [2020-10-15 23:16:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:15,289 INFO L93 Difference]: Finished difference Result 135625 states and 627192 transitions. [2020-10-15 23:16:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:15,290 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:15,679 INFO L225 Difference]: With dead ends: 135625 [2020-10-15 23:16:15,679 INFO L226 Difference]: Without dead ends: 135575 [2020-10-15 23:16:15,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135575 states. [2020-10-15 23:16:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135575 to 42083. [2020-10-15 23:16:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42083 states. [2020-10-15 23:16:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42083 states to 42083 states and 221863 transitions. [2020-10-15 23:16:18,588 INFO L78 Accepts]: Start accepts. Automaton has 42083 states and 221863 transitions. Word has length 29 [2020-10-15 23:16:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:18,588 INFO L481 AbstractCegarLoop]: Abstraction has 42083 states and 221863 transitions. [2020-10-15 23:16:18,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 42083 states and 221863 transitions. [2020-10-15 23:16:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:18,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:18,596 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:18,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-15 23:16:18,798 INFO L429 AbstractCegarLoop]: === Iteration 92 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:18,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1111608709, now seen corresponding path program 2 times [2020-10-15 23:16:18,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:18,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844402965] [2020-10-15 23:16:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:18,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844402965] [2020-10-15 23:16:18,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197993314] [2020-10-15 23:16:18,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:18,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:16:18,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:18,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:18,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 23:16:19,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:19,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:19,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155502635] [2020-10-15 23:16:19,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:19,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:19,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:19,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:19,113 INFO L87 Difference]: Start difference. First operand 42083 states and 221863 transitions. Second operand 16 states. [2020-10-15 23:16:21,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:21,643 INFO L93 Difference]: Finished difference Result 135171 states and 626620 transitions. [2020-10-15 23:16:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:21,644 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:22,041 INFO L225 Difference]: With dead ends: 135171 [2020-10-15 23:16:22,041 INFO L226 Difference]: Without dead ends: 135112 [2020-10-15 23:16:22,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135112 states. [2020-10-15 23:16:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135112 to 41353. [2020-10-15 23:16:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41353 states. [2020-10-15 23:16:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41353 states to 41353 states and 218067 transitions. [2020-10-15 23:16:24,914 INFO L78 Accepts]: Start accepts. Automaton has 41353 states and 218067 transitions. Word has length 29 [2020-10-15 23:16:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:24,914 INFO L481 AbstractCegarLoop]: Abstraction has 41353 states and 218067 transitions. [2020-10-15 23:16:24,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 41353 states and 218067 transitions. [2020-10-15 23:16:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:24,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:24,926 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:25,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-15 23:16:25,139 INFO L429 AbstractCegarLoop]: === Iteration 93 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash 888585425, now seen corresponding path program 3 times [2020-10-15 23:16:25,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:25,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647714875] [2020-10-15 23:16:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:25,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647714875] [2020-10-15 23:16:25,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471848088] [2020-10-15 23:16:25,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:25,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:16:25,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:25,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:25,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:25,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:25,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:25,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203056261] [2020-10-15 23:16:25,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:25,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:25,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:25,442 INFO L87 Difference]: Start difference. First operand 41353 states and 218067 transitions. Second operand 16 states. [2020-10-15 23:16:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:27,603 INFO L93 Difference]: Finished difference Result 135561 states and 628000 transitions. [2020-10-15 23:16:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:27,604 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:27,999 INFO L225 Difference]: With dead ends: 135561 [2020-10-15 23:16:27,999 INFO L226 Difference]: Without dead ends: 135517 [2020-10-15 23:16:27,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135517 states. [2020-10-15 23:16:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135517 to 41345. [2020-10-15 23:16:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41345 states. [2020-10-15 23:16:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41345 states to 41345 states and 218006 transitions. [2020-10-15 23:16:31,699 INFO L78 Accepts]: Start accepts. Automaton has 41345 states and 218006 transitions. Word has length 29 [2020-10-15 23:16:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:31,699 INFO L481 AbstractCegarLoop]: Abstraction has 41345 states and 218006 transitions. [2020-10-15 23:16:31,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 41345 states and 218006 transitions. [2020-10-15 23:16:31,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:31,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:31,707 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:31,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-15 23:16:31,908 INFO L429 AbstractCegarLoop]: === Iteration 94 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:31,909 INFO L82 PathProgramCache]: Analyzing trace with hash 877622337, now seen corresponding path program 3 times [2020-10-15 23:16:31,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:31,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466279272] [2020-10-15 23:16:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:31,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466279272] [2020-10-15 23:16:31,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727230222] [2020-10-15 23:16:31,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:32,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:16:32,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:32,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:32,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:32,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:32,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:32,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272579146] [2020-10-15 23:16:32,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:32,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:32,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:32,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:32,211 INFO L87 Difference]: Start difference. First operand 41345 states and 218006 transitions. Second operand 16 states. [2020-10-15 23:16:34,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:34,454 INFO L93 Difference]: Finished difference Result 134714 states and 623609 transitions. [2020-10-15 23:16:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:34,455 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:34,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:34,857 INFO L225 Difference]: With dead ends: 134714 [2020-10-15 23:16:34,857 INFO L226 Difference]: Without dead ends: 134670 [2020-10-15 23:16:34,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:36,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134670 states. [2020-10-15 23:16:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134670 to 41247. [2020-10-15 23:16:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41247 states. [2020-10-15 23:16:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41247 states to 41247 states and 217534 transitions. [2020-10-15 23:16:37,695 INFO L78 Accepts]: Start accepts. Automaton has 41247 states and 217534 transitions. Word has length 29 [2020-10-15 23:16:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:37,695 INFO L481 AbstractCegarLoop]: Abstraction has 41247 states and 217534 transitions. [2020-10-15 23:16:37,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 41247 states and 217534 transitions. [2020-10-15 23:16:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:37,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:37,703 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:37,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-15 23:16:37,904 INFO L429 AbstractCegarLoop]: === Iteration 95 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 861862898, now seen corresponding path program 3 times [2020-10-15 23:16:37,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:37,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247088092] [2020-10-15 23:16:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:37,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247088092] [2020-10-15 23:16:37,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508586187] [2020-10-15 23:16:37,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:38,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:16:38,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:38,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:38,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:38,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:38,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:38,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887601636] [2020-10-15 23:16:38,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:38,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:38,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:38,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:38,249 INFO L87 Difference]: Start difference. First operand 41247 states and 217534 transitions. Second operand 16 states. [2020-10-15 23:16:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:40,401 INFO L93 Difference]: Finished difference Result 134144 states and 620566 transitions. [2020-10-15 23:16:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:40,402 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:41,511 INFO L225 Difference]: With dead ends: 134144 [2020-10-15 23:16:41,511 INFO L226 Difference]: Without dead ends: 134100 [2020-10-15 23:16:41,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134100 states. [2020-10-15 23:16:44,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134100 to 41026. [2020-10-15 23:16:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41026 states. [2020-10-15 23:16:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41026 states to 41026 states and 216444 transitions. [2020-10-15 23:16:44,176 INFO L78 Accepts]: Start accepts. Automaton has 41026 states and 216444 transitions. Word has length 29 [2020-10-15 23:16:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:44,176 INFO L481 AbstractCegarLoop]: Abstraction has 41026 states and 216444 transitions. [2020-10-15 23:16:44,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 41026 states and 216444 transitions. [2020-10-15 23:16:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:44,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:44,185 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:44,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-15 23:16:44,386 INFO L429 AbstractCegarLoop]: === Iteration 96 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:44,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:44,386 INFO L82 PathProgramCache]: Analyzing trace with hash 868378385, now seen corresponding path program 4 times [2020-10-15 23:16:44,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:44,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23564013] [2020-10-15 23:16:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:44,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23564013] [2020-10-15 23:16:44,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693498148] [2020-10-15 23:16:44,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:44,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:16:44,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:44,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:44,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:44,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:44,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:44,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799180488] [2020-10-15 23:16:44,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:44,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:44,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:44,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:44,692 INFO L87 Difference]: Start difference. First operand 41026 states and 216444 transitions. Second operand 16 states. [2020-10-15 23:16:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:46,712 INFO L93 Difference]: Finished difference Result 136110 states and 630361 transitions. [2020-10-15 23:16:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:46,713 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:47,113 INFO L225 Difference]: With dead ends: 136110 [2020-10-15 23:16:47,113 INFO L226 Difference]: Without dead ends: 136051 [2020-10-15 23:16:47,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136051 states. [2020-10-15 23:16:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136051 to 41075. [2020-10-15 23:16:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41075 states. [2020-10-15 23:16:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41075 states to 41075 states and 216669 transitions. [2020-10-15 23:16:51,105 INFO L78 Accepts]: Start accepts. Automaton has 41075 states and 216669 transitions. Word has length 29 [2020-10-15 23:16:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:51,105 INFO L481 AbstractCegarLoop]: Abstraction has 41075 states and 216669 transitions. [2020-10-15 23:16:51,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 41075 states and 216669 transitions. [2020-10-15 23:16:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:51,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:51,116 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:51,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-15 23:16:51,316 INFO L429 AbstractCegarLoop]: === Iteration 97 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:51,317 INFO L82 PathProgramCache]: Analyzing trace with hash 868366977, now seen corresponding path program 4 times [2020-10-15 23:16:51,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:51,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397534046] [2020-10-15 23:16:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:51,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397534046] [2020-10-15 23:16:51,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282918337] [2020-10-15 23:16:51,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:51,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:16:51,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:51,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:51,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:51,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:51,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:51,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10276063] [2020-10-15 23:16:51,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:51,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:51,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:51,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:51,624 INFO L87 Difference]: Start difference. First operand 41075 states and 216669 transitions. Second operand 16 states. [2020-10-15 23:16:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:53,856 INFO L93 Difference]: Finished difference Result 134992 states and 625253 transitions. [2020-10-15 23:16:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:53,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:54,255 INFO L225 Difference]: With dead ends: 134992 [2020-10-15 23:16:54,256 INFO L226 Difference]: Without dead ends: 134933 [2020-10-15 23:16:54,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:16:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134933 states. [2020-10-15 23:16:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134933 to 40832. [2020-10-15 23:16:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40832 states. [2020-10-15 23:16:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40832 states to 40832 states and 215375 transitions. [2020-10-15 23:16:57,124 INFO L78 Accepts]: Start accepts. Automaton has 40832 states and 215375 transitions. Word has length 29 [2020-10-15 23:16:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:57,124 INFO L481 AbstractCegarLoop]: Abstraction has 40832 states and 215375 transitions. [2020-10-15 23:16:57,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:16:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 40832 states and 215375 transitions. [2020-10-15 23:16:57,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:16:57,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:57,132 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:57,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:57,340 INFO L429 AbstractCegarLoop]: === Iteration 98 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:16:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:57,340 INFO L82 PathProgramCache]: Analyzing trace with hash 868350578, now seen corresponding path program 4 times [2020-10-15 23:16:57,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:57,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540559732] [2020-10-15 23:16:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:57,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540559732] [2020-10-15 23:16:57,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465222275] [2020-10-15 23:16:57,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:57,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 23:16:57,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:16:57,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 23:16:57,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 23:16:57,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:57,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 23:16:57,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306720904] [2020-10-15 23:16:57,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 23:16:57,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:57,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 23:16:57,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 23:16:57,647 INFO L87 Difference]: Start difference. First operand 40832 states and 215375 transitions. Second operand 16 states. [2020-10-15 23:16:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:59,826 INFO L93 Difference]: Finished difference Result 133675 states and 619010 transitions. [2020-10-15 23:16:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:16:59,827 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-15 23:16:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:00,220 INFO L225 Difference]: With dead ends: 133675 [2020-10-15 23:17:00,220 INFO L226 Difference]: Without dead ends: 133616 [2020-10-15 23:17:00,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 23:17:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133616 states. [2020-10-15 23:17:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133616 to 40130. [2020-10-15 23:17:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40130 states. [2020-10-15 23:17:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40130 states to 40130 states and 211659 transitions. [2020-10-15 23:17:03,692 INFO L78 Accepts]: Start accepts. Automaton has 40130 states and 211659 transitions. Word has length 29 [2020-10-15 23:17:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:03,693 INFO L481 AbstractCegarLoop]: Abstraction has 40130 states and 211659 transitions. [2020-10-15 23:17:03,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 23:17:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 40130 states and 211659 transitions. [2020-10-15 23:17:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:17:03,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:03,701 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:03,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:03,907 INFO L429 AbstractCegarLoop]: === Iteration 99 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:03,907 INFO L82 PathProgramCache]: Analyzing trace with hash 350641582, now seen corresponding path program 1 times [2020-10-15 23:17:03,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:03,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820854012] [2020-10-15 23:17:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:03,942 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-15 23:17:03,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820854012] [2020-10-15 23:17:03,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:03,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 23:17:03,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174795088] [2020-10-15 23:17:03,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:17:03,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:03,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:17:03,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:17:03,943 INFO L87 Difference]: Start difference. First operand 40130 states and 211659 transitions. Second operand 5 states. [2020-10-15 23:17:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:04,489 INFO L93 Difference]: Finished difference Result 67092 states and 345298 transitions. [2020-10-15 23:17:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:17:04,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-15 23:17:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:04,693 INFO L225 Difference]: With dead ends: 67092 [2020-10-15 23:17:04,693 INFO L226 Difference]: Without dead ends: 67028 [2020-10-15 23:17:04,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:17:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67028 states. [2020-10-15 23:17:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67028 to 49403. [2020-10-15 23:17:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49403 states. [2020-10-15 23:17:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49403 states to 49403 states and 260758 transitions. [2020-10-15 23:17:06,611 INFO L78 Accepts]: Start accepts. Automaton has 49403 states and 260758 transitions. Word has length 29 [2020-10-15 23:17:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:06,612 INFO L481 AbstractCegarLoop]: Abstraction has 49403 states and 260758 transitions. [2020-10-15 23:17:06,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:17:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 49403 states and 260758 transitions. [2020-10-15 23:17:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:17:06,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:06,620 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:06,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2020-10-15 23:17:06,620 INFO L429 AbstractCegarLoop]: === Iteration 100 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:06,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:06,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1691122699, now seen corresponding path program 5 times [2020-10-15 23:17:06,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:06,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166424671] [2020-10-15 23:17:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:17:06,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166424671] [2020-10-15 23:17:06,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:06,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:17:06,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129408363] [2020-10-15 23:17:06,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:17:06,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:06,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:17:06,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:17:06,701 INFO L87 Difference]: Start difference. First operand 49403 states and 260758 transitions. Second operand 9 states. [2020-10-15 23:17:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:08,732 INFO L93 Difference]: Finished difference Result 158544 states and 742820 transitions. [2020-10-15 23:17:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:17:08,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:17:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:09,202 INFO L225 Difference]: With dead ends: 158544 [2020-10-15 23:17:09,202 INFO L226 Difference]: Without dead ends: 158488 [2020-10-15 23:17:09,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:17:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158488 states. [2020-10-15 23:17:13,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158488 to 49281. [2020-10-15 23:17:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49281 states. [2020-10-15 23:17:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49281 states to 49281 states and 259845 transitions. [2020-10-15 23:17:13,459 INFO L78 Accepts]: Start accepts. Automaton has 49281 states and 259845 transitions. Word has length 29 [2020-10-15 23:17:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:13,460 INFO L481 AbstractCegarLoop]: Abstraction has 49281 states and 259845 transitions. [2020-10-15 23:17:13,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:17:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 49281 states and 259845 transitions. [2020-10-15 23:17:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:17:13,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:13,470 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:13,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2020-10-15 23:17:13,470 INFO L429 AbstractCegarLoop]: === Iteration 101 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1691106300, now seen corresponding path program 5 times [2020-10-15 23:17:13,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:13,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816805222] [2020-10-15 23:17:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:17:13,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816805222] [2020-10-15 23:17:13,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:13,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:17:13,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699587532] [2020-10-15 23:17:13,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:17:13,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:13,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:17:13,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:17:13,552 INFO L87 Difference]: Start difference. First operand 49281 states and 259845 transitions. Second operand 9 states. [2020-10-15 23:17:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:15,507 INFO L93 Difference]: Finished difference Result 156182 states and 731010 transitions. [2020-10-15 23:17:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:17:15,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:17:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:15,960 INFO L225 Difference]: With dead ends: 156182 [2020-10-15 23:17:15,960 INFO L226 Difference]: Without dead ends: 156126 [2020-10-15 23:17:15,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:17:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156126 states. [2020-10-15 23:17:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156126 to 48971. [2020-10-15 23:17:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48971 states. [2020-10-15 23:17:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48971 states to 48971 states and 257988 transitions. [2020-10-15 23:17:19,313 INFO L78 Accepts]: Start accepts. Automaton has 48971 states and 257988 transitions. Word has length 29 [2020-10-15 23:17:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:19,313 INFO L481 AbstractCegarLoop]: Abstraction has 48971 states and 257988 transitions. [2020-10-15 23:17:19,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:17:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 48971 states and 257988 transitions. [2020-10-15 23:17:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:17:19,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:19,322 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:19,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2020-10-15 23:17:19,322 INFO L429 AbstractCegarLoop]: === Iteration 102 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:19,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1691126667, now seen corresponding path program 5 times [2020-10-15 23:17:19,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:19,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093543478] [2020-10-15 23:17:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:17:20,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093543478] [2020-10-15 23:17:20,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:20,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:17:20,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562868029] [2020-10-15 23:17:20,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:17:20,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:20,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:17:20,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:17:20,120 INFO L87 Difference]: Start difference. First operand 48971 states and 257988 transitions. Second operand 9 states. [2020-10-15 23:17:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:22,094 INFO L93 Difference]: Finished difference Result 153730 states and 719178 transitions. [2020-10-15 23:17:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:17:22,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:17:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:22,552 INFO L225 Difference]: With dead ends: 153730 [2020-10-15 23:17:22,553 INFO L226 Difference]: Without dead ends: 153674 [2020-10-15 23:17:22,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:17:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153674 states. [2020-10-15 23:17:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153674 to 48427. [2020-10-15 23:17:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48427 states. [2020-10-15 23:17:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48427 states to 48427 states and 254935 transitions. [2020-10-15 23:17:25,820 INFO L78 Accepts]: Start accepts. Automaton has 48427 states and 254935 transitions. Word has length 29 [2020-10-15 23:17:25,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:25,820 INFO L481 AbstractCegarLoop]: Abstraction has 48427 states and 254935 transitions. [2020-10-15 23:17:25,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 23:17:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 48427 states and 254935 transitions. [2020-10-15 23:17:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 23:17:25,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:25,828 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:25,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2020-10-15 23:17:25,828 INFO L429 AbstractCegarLoop]: === Iteration 103 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 23:17:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1680171019, now seen corresponding path program 6 times [2020-10-15 23:17:25,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:25,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760265155] [2020-10-15 23:17:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-15 23:17:25,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760265155] [2020-10-15 23:17:25,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:25,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 23:17:25,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373188115] [2020-10-15 23:17:25,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 23:17:25,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:25,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 23:17:25,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 23:17:25,915 INFO L87 Difference]: Start difference. First operand 48427 states and 254935 transitions. Second operand 9 states. [2020-10-15 23:17:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:27,856 INFO L93 Difference]: Finished difference Result 153132 states and 715258 transitions. [2020-10-15 23:17:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 23:17:27,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-15 23:17:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:28,317 INFO L225 Difference]: With dead ends: 153132 [2020-10-15 23:17:28,317 INFO L226 Difference]: Without dead ends: 153061 [2020-10-15 23:17:28,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-15 23:17:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153061 states. Received shutdown request... [2020-10-15 23:17:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153061 to 47511. [2020-10-15 23:17:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47511 states. [2020-10-15 23:17:32,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2020-10-15 23:17:32,165 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-15 23:17:32,168 WARN L235 ceAbstractionStarter]: Timeout [2020-10-15 23:17:32,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 11:17:32 BasicIcfg [2020-10-15 23:17:32,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 23:17:32,169 INFO L168 Benchmark]: Toolchain (without parser) took 779434.81 ms. Allocated memory was 250.1 MB in the beginning and 5.4 GB in the end (delta: 5.1 GB). Free memory was 203.7 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.9 GB. Max. memory is 14.2 GB. [2020-10-15 23:17:32,169 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 23:17:32,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 913.78 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 203.7 MB in the beginning and 266.9 MB in the end (delta: -63.1 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:32,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.52 ms. Allocated memory is still 310.9 MB. Free memory was 266.9 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:32,170 INFO L168 Benchmark]: Boogie Preprocessor took 36.89 ms. Allocated memory is still 310.9 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:32,171 INFO L168 Benchmark]: RCFGBuilder took 494.49 ms. Allocated memory is still 310.9 MB. Free memory was 261.8 MB in the beginning and 242.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:32,171 INFO L168 Benchmark]: TraceAbstraction took 777920.24 ms. Allocated memory was 310.9 MB in the beginning and 5.4 GB in the end (delta: 5.1 GB). Free memory was 242.5 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.9 GB. Max. memory is 14.2 GB. [2020-10-15 23:17:32,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 913.78 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 203.7 MB in the beginning and 266.9 MB in the end (delta: -63.1 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 61.52 ms. Allocated memory is still 310.9 MB. Free memory was 266.9 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 36.89 ms. Allocated memory is still 310.9 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 494.49 ms. Allocated memory is still 310.9 MB. Free memory was 261.8 MB in the beginning and 242.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 777920.24 ms. Allocated memory was 310.9 MB in the beginning and 5.4 GB in the end (delta: 5.1 GB). Free memory was 242.5 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.9 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 362 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 61 PlacesBefore, 18 PlacesAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 30 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 80 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 1122 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 826 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 50 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 99 PlacesBefore, 41 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 79 TotalNumberOfCompositions, 1841 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1012 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 118 PlacesBefore, 51 PlacesAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 92 TotalNumberOfCompositions, 2590 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1310 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 137 PlacesBefore, 61 PlacesAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 6 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 111 TotalNumberOfCompositions, 4038 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1797 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 125 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 156 PlacesBefore, 71 PlacesAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 121 TotalNumberOfCompositions, 4694 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 777.3s, OverallIterations: 178, TraceHistogramMax: 6, AutomataDifference: 329.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.7s, HoareTripleCheckerStatistics: 11111 SDtfs, 57423 SDslu, 51066 SDs, 0 SdLazy, 96874 SolverSat, 5994 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7052 GetRequests, 1674 SyntacticMatches, 0 SemanticMatches, 5378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68712 ImplicationChecksByTransitivity, 85.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49403occurred in iteration=99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 369.3s AutomataMinimizationTime, 173 MinimizatonAttempts, 9651194 StatesRemovedByMinimization, 165 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 26.6s InterpolantComputationTime, 6465 NumberOfCodeBlocks, 6353 NumberOfCodeBlocksAsserted, 359 NumberOfCheckSat, 6106 ConstructedInterpolants, 0 QuantifiedInterpolants, 949460 SizeOfPredicates, 584 NumberOfNonLiveVariables, 11752 ConjunctsInSsa, 878 ConjunctsInUnsatCore, 271 InterpolantComputations, 75 PerfectInterpolantSequences, 2578/4826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown