/usr/bin/java -Xmx8000000000 -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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:07:10,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:07:10,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:07:10,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:07:10,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:07:10,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:07:10,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:07:10,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:07:10,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:07:10,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:07:10,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:07:10,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:07:10,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:07:10,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:07:10,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:07:10,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:07:10,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:07:10,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:07:10,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:07:10,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:07:10,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:07:10,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:07:10,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:07:10,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:07:10,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:07:10,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:07:10,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:07:10,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:07:10,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:07:10,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:07:10,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:07:10,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:07:10,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:07:10,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:07:10,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:07:10,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:07:10,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:07:10,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:07:10,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:07:10,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:07:10,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:07:10,081 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-VariableLbe.epf [2020-04-18 03:07:10,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:07:10,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:07:10,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:07:10,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:07:10,098 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:07:10,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:07:10,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:07:10,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:07:10,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:07:10,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:07:10,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:07:10,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:07:10,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:07:10,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:07:10,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:07:10,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:07:10,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:07:10,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:07:10,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:07:10,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:07:10,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:07:10,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:07:10,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:07:10,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:07:10,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:07:10,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:07:10,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:07:10,102 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 03:07:10,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:07:10,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:07:10,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:07:10,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:07:10,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:07:10,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:07:10,437 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:07:10,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-04-18 03:07:10,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f7a0da6b/51299bc3e2f844309c3d5c501b4f8e29/FLAGfe27f1fa7 [2020-04-18 03:07:11,116 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:07:11,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-04-18 03:07:11,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f7a0da6b/51299bc3e2f844309c3d5c501b4f8e29/FLAGfe27f1fa7 [2020-04-18 03:07:11,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f7a0da6b/51299bc3e2f844309c3d5c501b4f8e29 [2020-04-18 03:07:11,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:07:11,470 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:07:11,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:07:11,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:07:11,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:07:11,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:07:11" (1/1) ... [2020-04-18 03:07:11,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aec3da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:11, skipping insertion in model container [2020-04-18 03:07:11,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:07:11" (1/1) ... [2020-04-18 03:07:11,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:07:11,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:07:12,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:07:12,066 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:07:12,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:07:12,225 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:07:12,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12 WrapperNode [2020-04-18 03:07:12,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:07:12,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:07:12,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:07:12,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:07:12,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:07:12,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:07:12,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:07:12,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:07:12,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (1/1) ... [2020-04-18 03:07:12,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:07:12,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:07:12,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:07:12,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:07:12,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (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 [2020-04-18 03:07:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 03:07:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 03:07:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 03:07:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 03:07:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:07:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:07:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:07:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:07:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:07:12,383 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 03:07:12,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:07:12,755 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-04-18 03:07:12,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:07:12 BoogieIcfgContainer [2020-04-18 03:07:12,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:07:12,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:07:12,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:07:12,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:07:12,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:07:11" (1/3) ... [2020-04-18 03:07:12,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4983be33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:07:12, skipping insertion in model container [2020-04-18 03:07:12,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:07:12" (2/3) ... [2020-04-18 03:07:12,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4983be33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:07:12, skipping insertion in model container [2020-04-18 03:07:12,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:07:12" (3/3) ... [2020-04-18 03:07:12,769 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-04-18 03:07:12,780 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:07:12,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:07:12,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 03:07:12,787 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:07:12,811 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,811 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,811 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,812 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,812 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,812 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,813 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,814 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,814 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,814 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,814 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,815 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,815 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,815 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,816 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,816 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,816 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,820 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,821 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,821 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,821 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,822 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,836 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,837 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,837 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,837 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,837 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,838 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:12,863 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 03:07:12,880 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:12,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:12,880 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:12,880 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:12,881 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:12,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:12,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:12,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:12,896 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 58 transitions, 126 flow [2020-04-18 03:07:12,898 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-04-18 03:07:12,944 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-04-18 03:07:12,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 03:07:12,950 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. [2020-04-18 03:07:12,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-04-18 03:07:12,976 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-04-18 03:07:12,976 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 03:07:12,977 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. [2020-04-18 03:07:12,979 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 592 [2020-04-18 03:07:12,980 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:14,351 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-04-18 03:07:14,778 WARN L192 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-04-18 03:07:14,972 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-04-18 03:07:15,210 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-04-18 03:07:15,301 INFO L206 etLargeBlockEncoding]: Checked pairs total: 486 [2020-04-18 03:07:15,303 INFO L214 etLargeBlockEncoding]: Total number of compositions: 51 [2020-04-18 03:07:15,307 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-04-18 03:07:15,325 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-04-18 03:07:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-04-18 03:07:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:15,335 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:15,336 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:15,337 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:15,345 INFO L82 PathProgramCache]: Analyzing trace with hash 229686, now seen corresponding path program 1 times [2020-04-18 03:07:15,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:15,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48825819] [2020-04-18 03:07:15,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:15,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48825819] [2020-04-18 03:07:15,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:15,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:15,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604874072] [2020-04-18 03:07:15,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:15,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:15,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:15,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:15,586 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-04-18 03:07:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:15,634 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-04-18 03:07:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:15,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:15,653 INFO L225 Difference]: With dead ends: 35 [2020-04-18 03:07:15,654 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 03:07:15,658 INFO L678 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 [2020-04-18 03:07:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 03:07:15,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-18 03:07:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-18 03:07:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-04-18 03:07:15,706 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-04-18 03:07:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:15,707 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-04-18 03:07:15,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-04-18 03:07:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 03:07:15,708 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:15,708 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:15,709 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:15,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647331, now seen corresponding path program 1 times [2020-04-18 03:07:15,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:15,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182326763] [2020-04-18 03:07:15,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:15,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182326763] [2020-04-18 03:07:15,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:15,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 03:07:15,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281390888] [2020-04-18 03:07:15,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 03:07:15,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:15,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 03:07:15,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 03:07:15,809 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-04-18 03:07:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:15,827 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-04-18 03:07:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 03:07:15,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 03:07:15,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:15,829 INFO L225 Difference]: With dead ends: 26 [2020-04-18 03:07:15,829 INFO L226 Difference]: Without dead ends: 24 [2020-04-18 03:07:15,842 INFO L678 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 [2020-04-18 03:07:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-04-18 03:07:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-04-18 03:07:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-04-18 03:07:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-04-18 03:07:15,847 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-04-18 03:07:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:15,847 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-04-18 03:07:15,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 03:07:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-04-18 03:07:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 03:07:15,848 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:15,848 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:15,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:15,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:15,849 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-04-18 03:07:15,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:15,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946583928] [2020-04-18 03:07:15,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:15,919 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:07:15,920 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:07:15,920 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:07:15,921 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:07:15,921 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 03:07:15,930 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,930 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,930 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,931 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,931 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,931 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,931 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,932 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,932 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,932 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,932 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,932 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,932 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,933 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,933 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,933 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,933 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,934 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,934 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,934 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,934 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,934 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,935 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,935 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,935 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,936 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,936 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,936 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,936 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,937 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,937 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,937 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,938 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,938 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,938 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,938 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,938 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,940 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,940 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,941 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,941 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,941 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,943 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,943 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,943 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,943 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,943 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,945 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,945 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,945 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,946 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,946 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,946 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:15,947 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 03:07:15,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:15,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:15,948 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:15,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:15,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:15,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:15,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:15,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:15,951 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 74 transitions, 172 flow [2020-04-18 03:07:15,951 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-04-18 03:07:15,971 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-04-18 03:07:15,971 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 03:07:15,972 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. [2020-04-18 03:07:15,975 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-04-18 03:07:15,992 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-04-18 03:07:15,992 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-04-18 03:07:15,994 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. [2020-04-18 03:07:15,995 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 920 [2020-04-18 03:07:15,996 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:17,534 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-04-18 03:07:17,616 INFO L206 etLargeBlockEncoding]: Checked pairs total: 942 [2020-04-18 03:07:17,617 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-18 03:07:17,617 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-04-18 03:07:17,630 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-04-18 03:07:17,630 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-04-18 03:07:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:17,630 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:17,631 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:17,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:17,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:17,631 INFO L82 PathProgramCache]: Analyzing trace with hash 384194, now seen corresponding path program 1 times [2020-04-18 03:07:17,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:17,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566991746] [2020-04-18 03:07:17,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:17,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566991746] [2020-04-18 03:07:17,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:17,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:17,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926347745] [2020-04-18 03:07:17,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:17,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:17,684 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-04-18 03:07:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:17,724 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-04-18 03:07:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:17,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:17,730 INFO L225 Difference]: With dead ends: 185 [2020-04-18 03:07:17,730 INFO L226 Difference]: Without dead ends: 171 [2020-04-18 03:07:17,731 INFO L678 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 [2020-04-18 03:07:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-04-18 03:07:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-04-18 03:07:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-18 03:07:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-04-18 03:07:17,755 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-04-18 03:07:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:17,755 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-04-18 03:07:17,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-04-18 03:07:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:07:17,756 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:17,757 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:17,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1694917346, now seen corresponding path program 1 times [2020-04-18 03:07:17,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:17,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697027317] [2020-04-18 03:07:17,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:17,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697027317] [2020-04-18 03:07:17,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:17,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:17,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728851390] [2020-04-18 03:07:17,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:17,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:17,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:17,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:17,821 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-04-18 03:07:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:17,923 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-04-18 03:07:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:17,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:07:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:17,926 INFO L225 Difference]: With dead ends: 205 [2020-04-18 03:07:17,926 INFO L226 Difference]: Without dead ends: 201 [2020-04-18 03:07:17,927 INFO L678 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 [2020-04-18 03:07:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-04-18 03:07:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-04-18 03:07:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 03:07:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-04-18 03:07:17,947 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-04-18 03:07:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:17,948 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-04-18 03:07:17,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-04-18 03:07:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:07:17,949 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:17,950 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:17,950 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:17,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1027741454, now seen corresponding path program 1 times [2020-04-18 03:07:17,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:17,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636880383] [2020-04-18 03:07:17,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:18,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636880383] [2020-04-18 03:07:18,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:18,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:18,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584147700] [2020-04-18 03:07:18,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:18,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:18,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:18,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:18,017 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-04-18 03:07:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:18,116 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-04-18 03:07:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:18,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:18,119 INFO L225 Difference]: With dead ends: 189 [2020-04-18 03:07:18,119 INFO L226 Difference]: Without dead ends: 185 [2020-04-18 03:07:18,120 INFO L678 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 [2020-04-18 03:07:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-04-18 03:07:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-04-18 03:07:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-04-18 03:07:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-04-18 03:07:18,137 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-04-18 03:07:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:18,138 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-04-18 03:07:18,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-04-18 03:07:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 03:07:18,140 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:18,140 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:18,140 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:18,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:18,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1792799235, now seen corresponding path program 1 times [2020-04-18 03:07:18,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:18,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852763300] [2020-04-18 03:07:18,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:18,181 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:07:18,182 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:07:18,182 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:07:18,182 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:07:18,184 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 03:07:18,195 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,195 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,195 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,196 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,196 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,196 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,196 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,197 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,197 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,197 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,197 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,197 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,198 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,198 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,198 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,198 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,198 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,199 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,199 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,199 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,199 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,200 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,200 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,200 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,201 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,201 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,201 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,201 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,201 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,202 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,202 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,202 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,203 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,203 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,203 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,203 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,203 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,204 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,204 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,205 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,205 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,205 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,205 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,206 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,206 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,206 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,206 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,217 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,217 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,218 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,218 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,218 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,218 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,219 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,220 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,220 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,221 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,221 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,221 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,222 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,222 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,223 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,223 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,223 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,224 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,224 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,225 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,225 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,225 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,225 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,226 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,227 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,227 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,227 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,227 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,227 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,229 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,229 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,229 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,229 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,229 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,230 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:18,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 03:07:18,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:18,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:18,231 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:18,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:18,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:18,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:18,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:18,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:18,234 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 90 transitions, 222 flow [2020-04-18 03:07:18,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-04-18 03:07:18,253 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-04-18 03:07:18,253 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 03:07:18,254 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. [2020-04-18 03:07:18,256 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-04-18 03:07:18,275 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-04-18 03:07:18,275 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-04-18 03:07:18,277 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. [2020-04-18 03:07:18,279 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1308 [2020-04-18 03:07:18,279 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:19,676 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-04-18 03:07:19,944 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:07:20,035 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1426 [2020-04-18 03:07:20,035 INFO L214 etLargeBlockEncoding]: Total number of compositions: 74 [2020-04-18 03:07:20,036 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-04-18 03:07:20,065 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-04-18 03:07:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-04-18 03:07:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:20,066 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:20,066 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:20,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:20,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:20,067 INFO L82 PathProgramCache]: Analyzing trace with hash 567457, now seen corresponding path program 1 times [2020-04-18 03:07:20,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:20,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970442282] [2020-04-18 03:07:20,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:20,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970442282] [2020-04-18 03:07:20,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:20,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:20,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881734482] [2020-04-18 03:07:20,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:20,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:20,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:20,112 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-04-18 03:07:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:20,145 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-04-18 03:07:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:20,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:20,152 INFO L225 Difference]: With dead ends: 600 [2020-04-18 03:07:20,153 INFO L226 Difference]: Without dead ends: 559 [2020-04-18 03:07:20,153 INFO L678 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 [2020-04-18 03:07:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-04-18 03:07:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-04-18 03:07:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-04-18 03:07:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-04-18 03:07:20,206 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-04-18 03:07:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:20,206 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-04-18 03:07:20,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-04-18 03:07:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:07:20,207 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:20,207 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:20,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:20,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1052273544, now seen corresponding path program 1 times [2020-04-18 03:07:20,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:20,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197952966] [2020-04-18 03:07:20,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:20,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197952966] [2020-04-18 03:07:20,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:20,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:20,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840730503] [2020-04-18 03:07:20,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:20,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:20,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:20,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:20,256 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-04-18 03:07:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:20,357 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-04-18 03:07:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:20,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:07:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:20,364 INFO L225 Difference]: With dead ends: 817 [2020-04-18 03:07:20,365 INFO L226 Difference]: Without dead ends: 812 [2020-04-18 03:07:20,365 INFO L678 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 [2020-04-18 03:07:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-04-18 03:07:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-04-18 03:07:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-04-18 03:07:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-04-18 03:07:20,396 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-04-18 03:07:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:20,396 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-04-18 03:07:20,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-04-18 03:07:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:07:20,397 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:20,398 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:20,398 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:20,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1096280394, now seen corresponding path program 1 times [2020-04-18 03:07:20,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:20,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377890865] [2020-04-18 03:07:20,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:20,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377890865] [2020-04-18 03:07:20,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:20,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:20,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452190877] [2020-04-18 03:07:20,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:20,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:20,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:20,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:20,466 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-04-18 03:07:20,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:20,582 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-04-18 03:07:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:20,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:20,590 INFO L225 Difference]: With dead ends: 843 [2020-04-18 03:07:20,591 INFO L226 Difference]: Without dead ends: 836 [2020-04-18 03:07:20,591 INFO L678 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 [2020-04-18 03:07:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-04-18 03:07:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-04-18 03:07:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-04-18 03:07:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-04-18 03:07:20,633 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-04-18 03:07:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:20,634 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-04-18 03:07:20,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-04-18 03:07:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:20,640 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:20,640 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:20,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:20,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2020-04-18 03:07:20,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:20,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287230765] [2020-04-18 03:07:20,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:20,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287230765] [2020-04-18 03:07:20,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515901208] [2020-04-18 03:07:20,777 INFO L94 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 [2020-04-18 03:07:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:20,902 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:20,905 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:20,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:20,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:20,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174002631] [2020-04-18 03:07:20,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:20,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:20,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:20,983 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 12 states. [2020-04-18 03:07:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:21,272 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-04-18 03:07:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:21,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:07:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:21,281 INFO L225 Difference]: With dead ends: 1059 [2020-04-18 03:07:21,281 INFO L226 Difference]: Without dead ends: 1052 [2020-04-18 03:07:21,282 INFO L678 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 [2020-04-18 03:07:21,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-04-18 03:07:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-04-18 03:07:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-04-18 03:07:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-04-18 03:07:21,313 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-04-18 03:07:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:21,314 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-04-18 03:07:21,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-04-18 03:07:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:21,315 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:21,315 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:21,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:21,525 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1258473782, now seen corresponding path program 2 times [2020-04-18 03:07:21,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:21,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174167551] [2020-04-18 03:07:21,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:21,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174167551] [2020-04-18 03:07:21,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:21,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:21,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024509097] [2020-04-18 03:07:21,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:21,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:21,603 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-04-18 03:07:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:21,877 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-04-18 03:07:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:21,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:07:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:21,885 INFO L225 Difference]: With dead ends: 1053 [2020-04-18 03:07:21,885 INFO L226 Difference]: Without dead ends: 1045 [2020-04-18 03:07:21,886 INFO L678 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 [2020-04-18 03:07:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-04-18 03:07:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-04-18 03:07:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-04-18 03:07:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-04-18 03:07:21,911 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-04-18 03:07:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:21,911 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-04-18 03:07:21,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-04-18 03:07:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:07:21,913 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:21,913 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:21,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1734594488, now seen corresponding path program 1 times [2020-04-18 03:07:21,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:21,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326610437] [2020-04-18 03:07:21,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:21,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326610437] [2020-04-18 03:07:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:21,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:21,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109993841] [2020-04-18 03:07:21,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:21,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:21,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:21,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:21,973 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-04-18 03:07:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:22,058 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-04-18 03:07:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:22,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:07:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:22,064 INFO L225 Difference]: With dead ends: 736 [2020-04-18 03:07:22,065 INFO L226 Difference]: Without dead ends: 728 [2020-04-18 03:07:22,065 INFO L678 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 [2020-04-18 03:07:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-04-18 03:07:22,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-04-18 03:07:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-04-18 03:07:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-04-18 03:07:22,086 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-04-18 03:07:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:22,087 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-04-18 03:07:22,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-04-18 03:07:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 03:07:22,088 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:22,088 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:22,088 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:07:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2065233823, now seen corresponding path program 1 times [2020-04-18 03:07:22,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:22,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466512860] [2020-04-18 03:07:22,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:22,122 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:07:22,122 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:07:22,122 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:07:22,123 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:07:22,123 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-04-18 03:07:22,136 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,137 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,137 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,137 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,137 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,138 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,138 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,138 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,138 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,138 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,138 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,139 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,139 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,139 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,139 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,139 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,139 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,140 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,140 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,140 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,140 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,140 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,140 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,141 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,141 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,141 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,141 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,141 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,142 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,142 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,142 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,142 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,142 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,142 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,143 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,143 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,143 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,143 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,143 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,144 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,144 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,144 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,144 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,144 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,144 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,145 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,145 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,145 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,145 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,145 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,145 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,146 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,146 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,146 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,146 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,146 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,146 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,147 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,147 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,147 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,147 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,147 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,147 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,148 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,148 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,148 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,148 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,148 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,149 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,149 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,149 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,149 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,149 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,151 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,152 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,152 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,152 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,152 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,153 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,153 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,154 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,154 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,154 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,155 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,155 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,156 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,156 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,156 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,157 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,157 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,158 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,158 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,158 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,158 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,160 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,161 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,161 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,161 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,161 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,161 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,163 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,164 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,164 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,164 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,164 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,164 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,166 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,167 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,167 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,167 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,167 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,167 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:22,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 03:07:22,170 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:22,170 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:22,170 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:22,170 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:22,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:22,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:22,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:22,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:22,172 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 276 flow [2020-04-18 03:07:22,172 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-04-18 03:07:22,190 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-04-18 03:07:22,190 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 03:07:22,191 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. [2020-04-18 03:07:22,195 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-04-18 03:07:22,210 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-04-18 03:07:22,211 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-04-18 03:07:22,212 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. [2020-04-18 03:07:22,216 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1756 [2020-04-18 03:07:22,216 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:24,320 WARN L192 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-04-18 03:07:24,503 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:07:24,616 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2033 [2020-04-18 03:07:24,616 INFO L214 etLargeBlockEncoding]: Total number of compositions: 86 [2020-04-18 03:07:24,616 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-04-18 03:07:24,730 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-04-18 03:07:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-04-18 03:07:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:24,731 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:24,731 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:24,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:24,732 INFO L82 PathProgramCache]: Analyzing trace with hash 779528, now seen corresponding path program 1 times [2020-04-18 03:07:24,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:24,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48525961] [2020-04-18 03:07:24,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:24,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48525961] [2020-04-18 03:07:24,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:24,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:24,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828079056] [2020-04-18 03:07:24,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:24,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:24,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:24,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:24,754 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-04-18 03:07:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:24,803 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-04-18 03:07:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:24,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:24,820 INFO L225 Difference]: With dead ends: 1889 [2020-04-18 03:07:24,820 INFO L226 Difference]: Without dead ends: 1767 [2020-04-18 03:07:24,820 INFO L678 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 [2020-04-18 03:07:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-04-18 03:07:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-04-18 03:07:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-04-18 03:07:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-04-18 03:07:24,917 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-04-18 03:07:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:24,917 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-04-18 03:07:24,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-04-18 03:07:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:07:24,918 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:24,918 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:24,918 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:24,919 INFO L82 PathProgramCache]: Analyzing trace with hash -666106918, now seen corresponding path program 1 times [2020-04-18 03:07:24,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:24,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226981458] [2020-04-18 03:07:24,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:24,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226981458] [2020-04-18 03:07:24,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:24,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:24,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021774291] [2020-04-18 03:07:24,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:24,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:24,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:24,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:24,966 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-04-18 03:07:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:25,071 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-04-18 03:07:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:25,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:07:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:25,096 INFO L225 Difference]: With dead ends: 2905 [2020-04-18 03:07:25,097 INFO L226 Difference]: Without dead ends: 2899 [2020-04-18 03:07:25,098 INFO L678 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 [2020-04-18 03:07:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-04-18 03:07:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-04-18 03:07:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-04-18 03:07:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-04-18 03:07:25,261 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-04-18 03:07:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:25,261 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-04-18 03:07:25,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-04-18 03:07:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:07:25,262 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:25,262 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:25,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1766896000, now seen corresponding path program 1 times [2020-04-18 03:07:25,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:25,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468765564] [2020-04-18 03:07:25,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:25,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468765564] [2020-04-18 03:07:25,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:25,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:25,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064940712] [2020-04-18 03:07:25,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:25,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:25,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:25,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:25,308 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-04-18 03:07:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:25,413 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-04-18 03:07:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:25,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:25,443 INFO L225 Difference]: With dead ends: 3204 [2020-04-18 03:07:25,443 INFO L226 Difference]: Without dead ends: 3194 [2020-04-18 03:07:25,443 INFO L678 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 [2020-04-18 03:07:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-04-18 03:07:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-04-18 03:07:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-04-18 03:07:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-04-18 03:07:25,551 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-04-18 03:07:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:25,554 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-04-18 03:07:25,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-04-18 03:07:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:25,555 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:25,555 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:25,555 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1022394712, now seen corresponding path program 1 times [2020-04-18 03:07:25,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:25,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650885822] [2020-04-18 03:07:25,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:25,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650885822] [2020-04-18 03:07:25,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075137505] [2020-04-18 03:07:25,625 INFO L94 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 [2020-04-18 03:07:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:25,701 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:25,703 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:25,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:25,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:25,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884562115] [2020-04-18 03:07:25,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:25,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:25,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:25,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:25,780 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 12 states. [2020-04-18 03:07:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:26,086 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-04-18 03:07:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:26,087 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:07:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:26,121 INFO L225 Difference]: With dead ends: 4556 [2020-04-18 03:07:26,121 INFO L226 Difference]: Without dead ends: 4546 [2020-04-18 03:07:26,122 INFO L678 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 [2020-04-18 03:07:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-04-18 03:07:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-04-18 03:07:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-04-18 03:07:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-04-18 03:07:26,244 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-04-18 03:07:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:26,244 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-04-18 03:07:26,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-04-18 03:07:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:26,245 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:26,245 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:26,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:26,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:26,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1474969304, now seen corresponding path program 2 times [2020-04-18 03:07:26,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:26,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120371346] [2020-04-18 03:07:26,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:26,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120371346] [2020-04-18 03:07:26,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:26,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:26,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634991618] [2020-04-18 03:07:26,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:26,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:26,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:26,524 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-04-18 03:07:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:26,858 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-04-18 03:07:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:26,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:07:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:26,877 INFO L225 Difference]: With dead ends: 4612 [2020-04-18 03:07:26,877 INFO L226 Difference]: Without dead ends: 4601 [2020-04-18 03:07:26,878 INFO L678 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 [2020-04-18 03:07:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-04-18 03:07:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-04-18 03:07:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-04-18 03:07:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-04-18 03:07:26,995 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-04-18 03:07:26,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:26,995 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-04-18 03:07:26,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-04-18 03:07:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:07:26,996 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:26,996 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:26,997 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:26,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1278978660, now seen corresponding path program 1 times [2020-04-18 03:07:26,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:26,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390433646] [2020-04-18 03:07:27,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:27,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390433646] [2020-04-18 03:07:27,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:27,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:27,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536293232] [2020-04-18 03:07:27,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:27,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:27,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:27,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:27,058 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-04-18 03:07:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:27,161 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-04-18 03:07:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:27,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:07:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:27,176 INFO L225 Difference]: With dead ends: 3265 [2020-04-18 03:07:27,176 INFO L226 Difference]: Without dead ends: 3250 [2020-04-18 03:07:27,176 INFO L678 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 [2020-04-18 03:07:27,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-04-18 03:07:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-04-18 03:07:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-04-18 03:07:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-04-18 03:07:27,269 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-04-18 03:07:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:27,270 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-04-18 03:07:27,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-04-18 03:07:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:27,271 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:27,271 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:27,272 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1455436228, now seen corresponding path program 1 times [2020-04-18 03:07:27,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:27,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944627471] [2020-04-18 03:07:27,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:27,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944627471] [2020-04-18 03:07:27,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957480667] [2020-04-18 03:07:27,371 INFO L94 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 [2020-04-18 03:07:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:27,449 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:27,450 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:27,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:27,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:27,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637623046] [2020-04-18 03:07:27,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:27,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:27,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:27,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:27,529 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 12 states. [2020-04-18 03:07:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:27,935 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-04-18 03:07:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:27,935 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:27,953 INFO L225 Difference]: With dead ends: 4825 [2020-04-18 03:07:27,953 INFO L226 Difference]: Without dead ends: 4813 [2020-04-18 03:07:27,954 INFO L678 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 [2020-04-18 03:07:28,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-04-18 03:07:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-04-18 03:07:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-04-18 03:07:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-04-18 03:07:28,126 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-04-18 03:07:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:28,128 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-04-18 03:07:28,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:28,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-04-18 03:07:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:28,132 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:28,132 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:28,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:28,336 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:28,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:28,337 INFO L82 PathProgramCache]: Analyzing trace with hash -979473248, now seen corresponding path program 1 times [2020-04-18 03:07:28,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:28,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236140570] [2020-04-18 03:07:28,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:28,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236140570] [2020-04-18 03:07:28,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550646750] [2020-04-18 03:07:28,411 INFO L94 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 [2020-04-18 03:07:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:28,489 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:28,490 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:28,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:28,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:28,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013036799] [2020-04-18 03:07:28,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:28,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:28,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:28,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:28,580 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 12 states. [2020-04-18 03:07:28,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:28,954 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-04-18 03:07:28,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:28,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:28,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:28,972 INFO L225 Difference]: With dead ends: 4942 [2020-04-18 03:07:28,972 INFO L226 Difference]: Without dead ends: 4925 [2020-04-18 03:07:28,973 INFO L678 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 [2020-04-18 03:07:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-04-18 03:07:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-04-18 03:07:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-04-18 03:07:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-04-18 03:07:29,079 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-04-18 03:07:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:29,079 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-04-18 03:07:29,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-04-18 03:07:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:29,081 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:29,081 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:29,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:29,285 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -737855584, now seen corresponding path program 2 times [2020-04-18 03:07:29,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:29,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95153437] [2020-04-18 03:07:29,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:29,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95153437] [2020-04-18 03:07:29,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:29,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:29,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646217292] [2020-04-18 03:07:29,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:29,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:29,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:29,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:29,367 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-04-18 03:07:29,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:29,651 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-04-18 03:07:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:29,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:29,667 INFO L225 Difference]: With dead ends: 4934 [2020-04-18 03:07:29,668 INFO L226 Difference]: Without dead ends: 4917 [2020-04-18 03:07:29,668 INFO L678 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 [2020-04-18 03:07:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-04-18 03:07:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-04-18 03:07:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-04-18 03:07:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-04-18 03:07:29,784 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-04-18 03:07:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:29,784 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-04-18 03:07:29,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-04-18 03:07:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:29,786 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:29,787 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:29,787 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:29,788 INFO L82 PathProgramCache]: Analyzing trace with hash -737840828, now seen corresponding path program 2 times [2020-04-18 03:07:29,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:29,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70747664] [2020-04-18 03:07:29,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:29,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70747664] [2020-04-18 03:07:29,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:29,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:29,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234760559] [2020-04-18 03:07:29,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:29,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:29,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:29,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:29,860 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-04-18 03:07:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:30,239 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-04-18 03:07:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:30,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:30,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:30,249 INFO L225 Difference]: With dead ends: 4774 [2020-04-18 03:07:30,249 INFO L226 Difference]: Without dead ends: 4757 [2020-04-18 03:07:30,249 INFO L678 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 [2020-04-18 03:07:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-04-18 03:07:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-04-18 03:07:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-04-18 03:07:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-04-18 03:07:30,344 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-04-18 03:07:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:30,344 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-04-18 03:07:30,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-04-18 03:07:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:30,346 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:30,346 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:30,346 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1726751032, now seen corresponding path program 1 times [2020-04-18 03:07:30,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:30,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057505888] [2020-04-18 03:07:30,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:30,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057505888] [2020-04-18 03:07:30,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173254512] [2020-04-18 03:07:30,418 INFO L94 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 [2020-04-18 03:07:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:30,489 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:30,492 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:30,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:30,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:30,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985287663] [2020-04-18 03:07:30,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:30,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:30,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:30,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:30,590 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 16 states. [2020-04-18 03:07:31,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:31,381 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-04-18 03:07:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:31,381 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:31,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:31,393 INFO L225 Difference]: With dead ends: 6025 [2020-04-18 03:07:31,393 INFO L226 Difference]: Without dead ends: 6017 [2020-04-18 03:07:31,394 INFO L678 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 [2020-04-18 03:07:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-04-18 03:07:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-04-18 03:07:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-04-18 03:07:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-04-18 03:07:31,564 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-04-18 03:07:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:31,564 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-04-18 03:07:31,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-04-18 03:07:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:31,566 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:31,566 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:31,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:31,771 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133368, now seen corresponding path program 2 times [2020-04-18 03:07:31,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:31,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334469977] [2020-04-18 03:07:31,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:31,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334469977] [2020-04-18 03:07:31,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342400392] [2020-04-18 03:07:31,852 INFO L92 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 [2020-04-18 03:07:31,926 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:31,926 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:31,927 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:31,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:07:32,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:32,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:32,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286758416] [2020-04-18 03:07:32,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:32,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:32,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:32,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:32,030 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 16 states. [2020-04-18 03:07:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:32,883 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-04-18 03:07:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:32,884 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:32,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:32,896 INFO L225 Difference]: With dead ends: 5914 [2020-04-18 03:07:32,896 INFO L226 Difference]: Without dead ends: 5903 [2020-04-18 03:07:32,897 INFO L678 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 [2020-04-18 03:07:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-04-18 03:07:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-04-18 03:07:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-04-18 03:07:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-04-18 03:07:32,997 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-04-18 03:07:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:32,997 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-04-18 03:07:32,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-04-18 03:07:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:32,999 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:32,999 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:33,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:33,203 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:33,204 INFO L82 PathProgramCache]: Analyzing trace with hash -268549816, now seen corresponding path program 3 times [2020-04-18 03:07:33,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:33,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937981244] [2020-04-18 03:07:33,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:33,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937981244] [2020-04-18 03:07:33,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843628556] [2020-04-18 03:07:33,307 INFO L92 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 [2020-04-18 03:07:33,385 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:07:33,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:33,386 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:33,387 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:33,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:33,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:33,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733994213] [2020-04-18 03:07:33,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:33,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:33,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:33,481 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 16 states. [2020-04-18 03:07:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:34,369 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-04-18 03:07:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:34,375 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:34,388 INFO L225 Difference]: With dead ends: 5907 [2020-04-18 03:07:34,389 INFO L226 Difference]: Without dead ends: 5899 [2020-04-18 03:07:34,389 INFO L678 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 [2020-04-18 03:07:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-04-18 03:07:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-04-18 03:07:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-04-18 03:07:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-04-18 03:07:34,478 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-04-18 03:07:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:34,479 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-04-18 03:07:34,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-04-18 03:07:34,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:34,481 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:34,481 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:34,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:34,695 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:34,696 INFO L82 PathProgramCache]: Analyzing trace with hash -675948728, now seen corresponding path program 4 times [2020-04-18 03:07:34,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:34,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652563711] [2020-04-18 03:07:34,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:34,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652563711] [2020-04-18 03:07:34,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762164125] [2020-04-18 03:07:34,794 INFO L92 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 [2020-04-18 03:07:34,874 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:07:34,875 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:34,876 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:34,877 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:34,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:34,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:34,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520968758] [2020-04-18 03:07:34,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:34,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:34,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:34,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:34,986 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 16 states. [2020-04-18 03:07:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:35,846 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-04-18 03:07:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:35,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:35,856 INFO L225 Difference]: With dead ends: 5835 [2020-04-18 03:07:35,856 INFO L226 Difference]: Without dead ends: 5824 [2020-04-18 03:07:35,857 INFO L678 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 [2020-04-18 03:07:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-04-18 03:07:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-04-18 03:07:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-04-18 03:07:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-04-18 03:07:35,919 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-04-18 03:07:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:35,920 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-04-18 03:07:35,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-04-18 03:07:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:35,922 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:35,922 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:36,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:36,126 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:36,126 INFO L82 PathProgramCache]: Analyzing trace with hash -409607608, now seen corresponding path program 5 times [2020-04-18 03:07:36,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:36,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117488019] [2020-04-18 03:07:36,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:36,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117488019] [2020-04-18 03:07:36,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:36,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:07:36,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766697889] [2020-04-18 03:07:36,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:07:36,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:36,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:07:36,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:07:36,214 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 9 states. [2020-04-18 03:07:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:36,983 INFO L93 Difference]: Finished difference Result 5820 states and 18126 transitions. [2020-04-18 03:07:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:36,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:07:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:36,999 INFO L225 Difference]: With dead ends: 5820 [2020-04-18 03:07:37,000 INFO L226 Difference]: Without dead ends: 5812 [2020-04-18 03:07:37,000 INFO L678 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 [2020-04-18 03:07:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2020-04-18 03:07:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 1907. [2020-04-18 03:07:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-04-18 03:07:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7310 transitions. [2020-04-18 03:07:37,094 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7310 transitions. Word has length 21 [2020-04-18 03:07:37,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:37,095 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 7310 transitions. [2020-04-18 03:07:37,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:07:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7310 transitions. [2020-04-18 03:07:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:37,097 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:37,097 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:37,097 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:37,097 INFO L82 PathProgramCache]: Analyzing trace with hash -395441848, now seen corresponding path program 6 times [2020-04-18 03:07:37,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:37,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480575293] [2020-04-18 03:07:37,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:37,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480575293] [2020-04-18 03:07:37,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:37,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:07:37,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145292701] [2020-04-18 03:07:37,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:07:37,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:37,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:07:37,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:07:37,171 INFO L87 Difference]: Start difference. First operand 1907 states and 7310 transitions. Second operand 9 states. [2020-04-18 03:07:37,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:37,846 INFO L93 Difference]: Finished difference Result 5717 states and 17784 transitions. [2020-04-18 03:07:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:37,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:07:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:37,855 INFO L225 Difference]: With dead ends: 5717 [2020-04-18 03:07:37,855 INFO L226 Difference]: Without dead ends: 5705 [2020-04-18 03:07:37,856 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:07:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-04-18 03:07:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 1800. [2020-04-18 03:07:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-04-18 03:07:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 6961 transitions. [2020-04-18 03:07:37,933 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 6961 transitions. Word has length 21 [2020-04-18 03:07:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:37,933 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 6961 transitions. [2020-04-18 03:07:37,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:07:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 6961 transitions. [2020-04-18 03:07:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:37,934 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:37,934 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:37,935 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash -334654421, now seen corresponding path program 1 times [2020-04-18 03:07:37,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:37,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590874592] [2020-04-18 03:07:37,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:07:37,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590874592] [2020-04-18 03:07:37,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:37,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:37,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720268309] [2020-04-18 03:07:37,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:37,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:37,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:37,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:37,972 INFO L87 Difference]: Start difference. First operand 1800 states and 6961 transitions. Second operand 5 states. [2020-04-18 03:07:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:38,088 INFO L93 Difference]: Finished difference Result 2762 states and 9976 transitions. [2020-04-18 03:07:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:38,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 03:07:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:38,097 INFO L225 Difference]: With dead ends: 2762 [2020-04-18 03:07:38,097 INFO L226 Difference]: Without dead ends: 2746 [2020-04-18 03:07:38,102 INFO L678 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 [2020-04-18 03:07:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2020-04-18 03:07:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1965. [2020-04-18 03:07:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-04-18 03:07:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-04-18 03:07:38,178 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-04-18 03:07:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:38,179 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-04-18 03:07:38,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-04-18 03:07:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 03:07:38,182 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:38,183 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:38,183 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 03:07:38,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1788555247, now seen corresponding path program 1 times [2020-04-18 03:07:38,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:38,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784823566] [2020-04-18 03:07:38,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:07:38,227 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:07:38,228 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:07:38,228 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:07:38,229 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:07:38,229 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-04-18 03:07:38,247 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,248 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,248 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,248 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,248 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,248 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,249 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,249 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,251 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,251 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,251 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,252 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,252 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,252 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,252 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,252 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,252 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,253 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,253 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,253 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,253 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,253 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,253 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,253 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,254 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,254 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,254 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,254 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,254 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,254 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,255 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,255 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,255 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,255 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,255 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,255 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,256 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,257 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,257 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,257 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,257 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,258 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,258 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,258 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,258 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,258 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,259 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,259 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,259 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,259 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,259 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,259 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,259 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,260 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,260 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,260 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,260 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,260 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,260 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,260 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,261 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,261 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,261 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,262 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,262 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,262 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,262 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,262 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,262 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,263 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,263 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,264 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,264 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,264 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,266 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,266 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,267 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,267 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,267 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,268 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,268 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,268 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,269 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,269 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,270 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,270 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,270 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,270 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,270 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,271 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,271 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,271 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,271 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,271 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,272 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,273 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,273 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,273 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,273 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,273 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,274 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,274 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,274 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,274 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,274 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,275 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,276 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,276 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,276 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,276 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,276 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,276 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,277 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,278 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,278 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,280 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,280 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,280 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,281 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:07:38,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-04-18 03:07:38,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:07:38,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:07:38,282 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:07:38,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:07:38,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:07:38,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:07:38,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:07:38,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:07:38,284 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 122 transitions, 334 flow [2020-04-18 03:07:38,284 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-04-18 03:07:38,302 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-04-18 03:07:38,302 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 03:07:38,303 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. [2020-04-18 03:07:38,308 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-04-18 03:07:38,325 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-04-18 03:07:38,325 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-04-18 03:07:38,326 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. [2020-04-18 03:07:38,330 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2264 [2020-04-18 03:07:38,330 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:07:40,374 WARN L192 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-04-18 03:07:40,723 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-04-18 03:07:40,963 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:07:41,054 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2999 [2020-04-18 03:07:41,067 INFO L214 etLargeBlockEncoding]: Total number of compositions: 104 [2020-04-18 03:07:41,067 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-04-18 03:07:41,525 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-04-18 03:07:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-04-18 03:07:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:07:41,525 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:41,526 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:07:41,526 INFO L427 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]=== [2020-04-18 03:07:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1026170, now seen corresponding path program 1 times [2020-04-18 03:07:41,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:41,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477856436] [2020-04-18 03:07:41,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:41,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477856436] [2020-04-18 03:07:41,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:41,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:07:41,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532210175] [2020-04-18 03:07:41,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:07:41,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:41,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:07:41,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:07:41,541 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-04-18 03:07:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:41,618 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-04-18 03:07:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:07:41,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:07:41,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:41,637 INFO L225 Difference]: With dead ends: 5844 [2020-04-18 03:07:41,637 INFO L226 Difference]: Without dead ends: 5479 [2020-04-18 03:07:41,639 INFO L678 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 [2020-04-18 03:07:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-04-18 03:07:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-04-18 03:07:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-04-18 03:07:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-04-18 03:07:41,793 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-04-18 03:07:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:41,793 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-04-18 03:07:41,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:07:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-04-18 03:07:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:07:41,794 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:41,794 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:41,794 INFO L427 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]=== [2020-04-18 03:07:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1344335463, now seen corresponding path program 1 times [2020-04-18 03:07:41,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:41,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470272858] [2020-04-18 03:07:41,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:41,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470272858] [2020-04-18 03:07:41,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:41,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:41,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909633389] [2020-04-18 03:07:41,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:41,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:41,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:41,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:41,831 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-04-18 03:07:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:41,992 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-04-18 03:07:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:41,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:07:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:42,028 INFO L225 Difference]: With dead ends: 9673 [2020-04-18 03:07:42,028 INFO L226 Difference]: Without dead ends: 9666 [2020-04-18 03:07:42,028 INFO L678 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 [2020-04-18 03:07:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-04-18 03:07:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-04-18 03:07:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-04-18 03:07:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-04-18 03:07:42,264 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-04-18 03:07:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:42,264 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-04-18 03:07:42,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-04-18 03:07:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:07:42,265 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:42,265 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:42,265 INFO L427 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]=== [2020-04-18 03:07:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:42,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1513378118, now seen corresponding path program 1 times [2020-04-18 03:07:42,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:42,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317652656] [2020-04-18 03:07:42,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:42,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317652656] [2020-04-18 03:07:42,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:42,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:42,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287782205] [2020-04-18 03:07:42,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:42,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:42,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:42,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:42,298 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-04-18 03:07:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:42,468 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-04-18 03:07:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:42,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:07:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:42,505 INFO L225 Difference]: With dead ends: 11081 [2020-04-18 03:07:42,505 INFO L226 Difference]: Without dead ends: 11068 [2020-04-18 03:07:42,506 INFO L678 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 [2020-04-18 03:07:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-04-18 03:07:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-04-18 03:07:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-04-18 03:07:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-04-18 03:07:43,474 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-04-18 03:07:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:43,475 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-04-18 03:07:43,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-04-18 03:07:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:43,475 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:43,475 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:43,476 INFO L427 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]=== [2020-04-18 03:07:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:43,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1678648171, now seen corresponding path program 1 times [2020-04-18 03:07:43,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:43,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471080705] [2020-04-18 03:07:43,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:43,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471080705] [2020-04-18 03:07:43,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141613599] [2020-04-18 03:07:43,531 INFO L94 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 [2020-04-18 03:07:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:43,623 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:43,624 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:43,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:43,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:43,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141041134] [2020-04-18 03:07:43,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:43,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:43,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:43,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:43,688 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 12 states. [2020-04-18 03:07:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:44,185 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-04-18 03:07:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:44,186 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:07:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:44,258 INFO L225 Difference]: With dead ends: 16749 [2020-04-18 03:07:44,258 INFO L226 Difference]: Without dead ends: 16736 [2020-04-18 03:07:44,259 INFO L678 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 [2020-04-18 03:07:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-04-18 03:07:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-04-18 03:07:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-04-18 03:07:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-04-18 03:07:44,791 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-04-18 03:07:44,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:44,792 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-04-18 03:07:44,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-04-18 03:07:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:07:44,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:44,793 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:44,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:44,998 INFO L427 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]=== [2020-04-18 03:07:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:44,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1637555113, now seen corresponding path program 2 times [2020-04-18 03:07:44,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:44,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168974592] [2020-04-18 03:07:44,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:45,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168974592] [2020-04-18 03:07:45,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:45,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:45,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065683137] [2020-04-18 03:07:45,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:45,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:45,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:45,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:45,051 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-04-18 03:07:45,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:45,540 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-04-18 03:07:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:45,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:07:45,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:45,584 INFO L225 Difference]: With dead ends: 17085 [2020-04-18 03:07:45,584 INFO L226 Difference]: Without dead ends: 17071 [2020-04-18 03:07:45,584 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:45,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-04-18 03:07:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-04-18 03:07:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-04-18 03:07:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-04-18 03:07:45,868 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-04-18 03:07:45,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:45,868 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-04-18 03:07:45,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-04-18 03:07:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:07:45,869 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:45,869 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:45,869 INFO L427 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]=== [2020-04-18 03:07:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash -288445665, now seen corresponding path program 1 times [2020-04-18 03:07:45,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:45,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428796181] [2020-04-18 03:07:45,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:45,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428796181] [2020-04-18 03:07:45,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:45,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:45,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559710395] [2020-04-18 03:07:45,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:45,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:45,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:45,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:45,913 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-04-18 03:07:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:46,057 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-04-18 03:07:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:07:46,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:07:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:46,100 INFO L225 Difference]: With dead ends: 12234 [2020-04-18 03:07:46,100 INFO L226 Difference]: Without dead ends: 12212 [2020-04-18 03:07:46,102 INFO L678 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 [2020-04-18 03:07:46,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-04-18 03:07:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-04-18 03:07:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-04-18 03:07:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-04-18 03:07:46,386 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-04-18 03:07:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:46,386 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-04-18 03:07:46,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:07:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-04-18 03:07:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:46,387 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:46,387 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:46,387 INFO L427 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]=== [2020-04-18 03:07:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:46,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1255672082, now seen corresponding path program 1 times [2020-04-18 03:07:46,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:46,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574990219] [2020-04-18 03:07:46,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:46,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574990219] [2020-04-18 03:07:46,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078721981] [2020-04-18 03:07:46,430 INFO L94 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 [2020-04-18 03:07:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:46,517 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:46,518 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:46,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:46,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:46,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901310192] [2020-04-18 03:07:46,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:46,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:46,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:46,577 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 12 states. [2020-04-18 03:07:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:47,029 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-04-18 03:07:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:47,030 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:47,074 INFO L225 Difference]: With dead ends: 19016 [2020-04-18 03:07:47,074 INFO L226 Difference]: Without dead ends: 18998 [2020-04-18 03:07:47,075 INFO L678 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 [2020-04-18 03:07:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-04-18 03:07:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-04-18 03:07:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-04-18 03:07:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-04-18 03:07:47,401 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-04-18 03:07:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:47,401 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-04-18 03:07:47,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-04-18 03:07:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:47,402 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:47,402 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:47,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:47,604 INFO L427 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]=== [2020-04-18 03:07:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:47,604 INFO L82 PathProgramCache]: Analyzing trace with hash 402059005, now seen corresponding path program 1 times [2020-04-18 03:07:47,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:47,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704322633] [2020-04-18 03:07:47,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:47,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704322633] [2020-04-18 03:07:47,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771143464] [2020-04-18 03:07:47,655 INFO L94 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 [2020-04-18 03:07:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:47,737 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:07:47,748 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:47,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:47,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:07:47,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682518851] [2020-04-18 03:07:47,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:07:47,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:07:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:07:47,811 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 12 states. [2020-04-18 03:07:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:48,310 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-04-18 03:07:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:48,311 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:07:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:48,395 INFO L225 Difference]: With dead ends: 19670 [2020-04-18 03:07:48,396 INFO L226 Difference]: Without dead ends: 19645 [2020-04-18 03:07:48,396 INFO L678 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 [2020-04-18 03:07:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-04-18 03:07:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-04-18 03:07:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-04-18 03:07:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-04-18 03:07:49,119 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-04-18 03:07:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:49,119 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-04-18 03:07:49,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:07:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-04-18 03:07:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:49,121 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:49,121 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:49,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:49,329 INFO L427 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]=== [2020-04-18 03:07:49,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:49,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1976597437, now seen corresponding path program 2 times [2020-04-18 03:07:49,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:49,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523286291] [2020-04-18 03:07:49,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:49,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523286291] [2020-04-18 03:07:49,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:49,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:49,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446440731] [2020-04-18 03:07:49,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:49,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:49,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:49,375 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-04-18 03:07:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:49,744 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-04-18 03:07:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:49,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:49,794 INFO L225 Difference]: With dead ends: 19852 [2020-04-18 03:07:49,794 INFO L226 Difference]: Without dead ends: 19827 [2020-04-18 03:07:49,795 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:07:49,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-04-18 03:07:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-04-18 03:07:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-04-18 03:07:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-04-18 03:07:50,163 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-04-18 03:07:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:50,163 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-04-18 03:07:50,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-04-18 03:07:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:07:50,164 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:50,165 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:50,165 INFO L427 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]=== [2020-04-18 03:07:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:50,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1976577008, now seen corresponding path program 2 times [2020-04-18 03:07:50,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:50,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903180922] [2020-04-18 03:07:50,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:07:50,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903180922] [2020-04-18 03:07:50,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:50,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:07:50,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487930526] [2020-04-18 03:07:50,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:07:50,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:50,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:07:50,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:07:50,243 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-04-18 03:07:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:50,610 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-04-18 03:07:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:07:50,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:07:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:50,660 INFO L225 Difference]: With dead ends: 19555 [2020-04-18 03:07:50,661 INFO L226 Difference]: Without dead ends: 19530 [2020-04-18 03:07:50,661 INFO L678 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 [2020-04-18 03:07:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-04-18 03:07:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-04-18 03:07:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-04-18 03:07:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-04-18 03:07:51,256 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-04-18 03:07:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:51,256 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-04-18 03:07:51,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:07:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-04-18 03:07:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:51,258 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:51,258 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:51,258 INFO L427 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]=== [2020-04-18 03:07:51,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1389591796, now seen corresponding path program 1 times [2020-04-18 03:07:51,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:51,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031490157] [2020-04-18 03:07:51,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:51,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031490157] [2020-04-18 03:07:51,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364283267] [2020-04-18 03:07:51,321 INFO L94 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 [2020-04-18 03:07:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:51,407 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:51,408 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:07:51,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:51,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:51,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657517094] [2020-04-18 03:07:51,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:51,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:51,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:51,511 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 16 states. [2020-04-18 03:07:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:52,530 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-04-18 03:07:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:52,531 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:52,601 INFO L225 Difference]: With dead ends: 26969 [2020-04-18 03:07:52,601 INFO L226 Difference]: Without dead ends: 26957 [2020-04-18 03:07:52,602 INFO L678 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 [2020-04-18 03:07:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-04-18 03:07:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-04-18 03:07:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-04-18 03:07:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-04-18 03:07:53,031 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-04-18 03:07:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:53,031 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-04-18 03:07:53,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-04-18 03:07:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:53,033 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:53,033 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:53,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:53,237 INFO L427 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]=== [2020-04-18 03:07:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash 184946636, now seen corresponding path program 2 times [2020-04-18 03:07:53,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:53,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707603544] [2020-04-18 03:07:53,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:53,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707603544] [2020-04-18 03:07:53,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061434243] [2020-04-18 03:07:53,336 INFO L92 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 [2020-04-18 03:07:53,429 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:07:53,429 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:53,430 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:53,431 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:07:53,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:53,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:53,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838278940] [2020-04-18 03:07:53,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:53,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:53,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:53,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:53,539 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 16 states. [2020-04-18 03:07:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:54,921 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-04-18 03:07:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:54,922 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:54,987 INFO L225 Difference]: With dead ends: 26661 [2020-04-18 03:07:54,987 INFO L226 Difference]: Without dead ends: 26645 [2020-04-18 03:07:54,988 INFO L678 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 [2020-04-18 03:07:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-04-18 03:07:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-04-18 03:07:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-04-18 03:07:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-04-18 03:07:55,387 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-04-18 03:07:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:55,387 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-04-18 03:07:55,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-04-18 03:07:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:55,388 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:55,389 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:55,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:55,589 INFO L427 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]=== [2020-04-18 03:07:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:55,590 INFO L82 PathProgramCache]: Analyzing trace with hash -231570740, now seen corresponding path program 3 times [2020-04-18 03:07:55,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:55,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983893463] [2020-04-18 03:07:55,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:55,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983893463] [2020-04-18 03:07:55,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948322720] [2020-04-18 03:07:55,664 INFO L92 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 [2020-04-18 03:07:55,745 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:07:55,746 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:55,747 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:55,761 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:55,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:55,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:55,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311895131] [2020-04-18 03:07:55,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:55,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:55,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:55,864 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 16 states. [2020-04-18 03:07:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:56,797 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-04-18 03:07:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:56,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:56,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:56,877 INFO L225 Difference]: With dead ends: 26686 [2020-04-18 03:07:56,878 INFO L226 Difference]: Without dead ends: 26674 [2020-04-18 03:07:56,878 INFO L678 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 [2020-04-18 03:07:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-04-18 03:07:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-04-18 03:07:57,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-04-18 03:07:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-04-18 03:07:57,621 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-04-18 03:07:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:57,621 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-04-18 03:07:57,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-04-18 03:07:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:57,622 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:57,622 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:57,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:57,823 INFO L427 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]=== [2020-04-18 03:07:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:57,824 INFO L82 PathProgramCache]: Analyzing trace with hash -168366002, now seen corresponding path program 4 times [2020-04-18 03:07:57,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:57,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183232492] [2020-04-18 03:07:57,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:57,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183232492] [2020-04-18 03:07:57,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27922390] [2020-04-18 03:07:57,891 INFO L92 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 [2020-04-18 03:07:57,985 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:07:57,986 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:07:57,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:07:57,988 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:07:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:07:58,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:07:58,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:07:58,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533923605] [2020-04-18 03:07:58,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:07:58,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:58,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:07:58,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:07:58,075 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 16 states. [2020-04-18 03:07:59,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:07:59,099 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-04-18 03:07:59,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:07:59,100 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:07:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:07:59,176 INFO L225 Difference]: With dead ends: 26489 [2020-04-18 03:07:59,176 INFO L226 Difference]: Without dead ends: 26473 [2020-04-18 03:07:59,177 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:07:59,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-04-18 03:07:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-04-18 03:07:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-04-18 03:07:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-04-18 03:07:59,576 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-04-18 03:07:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:07:59,576 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-04-18 03:07:59,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:07:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-04-18 03:07:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:07:59,577 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:07:59,577 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:07:59,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:07:59,778 INFO L427 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]=== [2020-04-18 03:07:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:07:59,779 INFO L82 PathProgramCache]: Analyzing trace with hash 210203517, now seen corresponding path program 1 times [2020-04-18 03:07:59,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:07:59,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411878816] [2020-04-18 03:07:59,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:07:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:07:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:07:59,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411878816] [2020-04-18 03:07:59,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:07:59,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:07:59,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322637759] [2020-04-18 03:07:59,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:07:59,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:07:59,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:07:59,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:07:59,845 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-04-18 03:08:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:00,028 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-04-18 03:08:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:00,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 03:08:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:00,077 INFO L225 Difference]: With dead ends: 13251 [2020-04-18 03:08:00,077 INFO L226 Difference]: Without dead ends: 13220 [2020-04-18 03:08:00,078 INFO L678 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 [2020-04-18 03:08:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-04-18 03:08:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-04-18 03:08:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-04-18 03:08:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-04-18 03:08:00,694 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-04-18 03:08:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:00,694 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-04-18 03:08:00,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-04-18 03:08:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:08:00,695 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:00,696 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:00,696 INFO L427 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]=== [2020-04-18 03:08:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:00,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1134578958, now seen corresponding path program 5 times [2020-04-18 03:08:00,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:00,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261668215] [2020-04-18 03:08:00,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:08:00,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261668215] [2020-04-18 03:08:00,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:00,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:00,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207898822] [2020-04-18 03:08:00,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:00,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:00,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:00,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:00,759 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-04-18 03:08:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:01,590 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-04-18 03:08:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:01,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:08:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:01,672 INFO L225 Difference]: With dead ends: 29788 [2020-04-18 03:08:01,672 INFO L226 Difference]: Without dead ends: 29770 [2020-04-18 03:08:01,673 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-04-18 03:08:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-04-18 03:08:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-04-18 03:08:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-04-18 03:08:02,140 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-04-18 03:08:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:02,140 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-04-18 03:08:02,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-04-18 03:08:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:08:02,141 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:02,141 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:02,142 INFO L427 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]=== [2020-04-18 03:08:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:02,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1114967118, now seen corresponding path program 6 times [2020-04-18 03:08:02,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:02,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695117987] [2020-04-18 03:08:02,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:08:02,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695117987] [2020-04-18 03:08:02,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:02,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:02,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412513125] [2020-04-18 03:08:02,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:02,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:02,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:02,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:02,211 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-04-18 03:08:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:03,099 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-04-18 03:08:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:03,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:08:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:03,164 INFO L225 Difference]: With dead ends: 29379 [2020-04-18 03:08:03,164 INFO L226 Difference]: Without dead ends: 29356 [2020-04-18 03:08:03,165 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:03,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-04-18 03:08:03,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-04-18 03:08:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-04-18 03:08:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-04-18 03:08:04,767 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-04-18 03:08:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:04,767 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-04-18 03:08:04,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-04-18 03:08:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:08:04,770 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:04,770 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:04,770 INFO L427 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]=== [2020-04-18 03:08:04,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:04,770 INFO L82 PathProgramCache]: Analyzing trace with hash 715669452, now seen corresponding path program 1 times [2020-04-18 03:08:04,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:04,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081302489] [2020-04-18 03:08:04,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:04,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081302489] [2020-04-18 03:08:04,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185487533] [2020-04-18 03:08:04,822 INFO L94 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 [2020-04-18 03:08:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:04,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:08:04,909 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:04,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:04,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:08:04,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451415256] [2020-04-18 03:08:04,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:08:04,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:04,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:08:04,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:08:04,963 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 12 states. [2020-04-18 03:08:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:05,384 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-04-18 03:08:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:05,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:08:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:05,436 INFO L225 Difference]: With dead ends: 19727 [2020-04-18 03:08:05,436 INFO L226 Difference]: Without dead ends: 19703 [2020-04-18 03:08:05,436 INFO L678 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 [2020-04-18 03:08:05,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-04-18 03:08:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-04-18 03:08:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-04-18 03:08:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-04-18 03:08:05,761 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-04-18 03:08:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:05,761 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-04-18 03:08:05,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:08:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-04-18 03:08:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:08:05,763 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:05,763 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:05,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:05,964 INFO L427 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]=== [2020-04-18 03:08:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:05,965 INFO L82 PathProgramCache]: Analyzing trace with hash 504272987, now seen corresponding path program 1 times [2020-04-18 03:08:05,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:05,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729121749] [2020-04-18 03:08:05,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:06,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729121749] [2020-04-18 03:08:06,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62355579] [2020-04-18 03:08:06,012 INFO L94 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 [2020-04-18 03:08:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:06,099 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:08:06,100 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:06,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:06,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:08:06,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428148983] [2020-04-18 03:08:06,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:08:06,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:08:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:08:06,172 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 12 states. [2020-04-18 03:08:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:06,552 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-04-18 03:08:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:06,553 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:08:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:06,605 INFO L225 Difference]: With dead ends: 20694 [2020-04-18 03:08:06,606 INFO L226 Difference]: Without dead ends: 20666 [2020-04-18 03:08:06,606 INFO L678 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 [2020-04-18 03:08:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-04-18 03:08:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-04-18 03:08:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-04-18 03:08:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-04-18 03:08:06,957 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-04-18 03:08:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:06,958 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-04-18 03:08:06,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:08:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-04-18 03:08:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:08:06,961 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:06,961 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:07,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:07,165 INFO L427 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]=== [2020-04-18 03:08:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:07,165 INFO L82 PathProgramCache]: Analyzing trace with hash 591685125, now seen corresponding path program 1 times [2020-04-18 03:08:07,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:07,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221921184] [2020-04-18 03:08:07,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:07,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221921184] [2020-04-18 03:08:07,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638904472] [2020-04-18 03:08:07,216 INFO L94 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 [2020-04-18 03:08:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:07,308 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:08:07,309 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:07,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:07,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:08:07,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226591415] [2020-04-18 03:08:07,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:08:07,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:07,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:08:07,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:08:07,369 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 12 states. [2020-04-18 03:08:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:07,982 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-04-18 03:08:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:07,983 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:08:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:08,058 INFO L225 Difference]: With dead ends: 21396 [2020-04-18 03:08:08,058 INFO L226 Difference]: Without dead ends: 21359 [2020-04-18 03:08:08,058 INFO L678 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 [2020-04-18 03:08:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-04-18 03:08:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-04-18 03:08:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-04-18 03:08:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-04-18 03:08:08,446 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-04-18 03:08:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:08,447 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-04-18 03:08:08,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:08:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-04-18 03:08:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:08:08,449 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:08,449 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:08,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:08,650 INFO L427 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]=== [2020-04-18 03:08:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash 142124187, now seen corresponding path program 2 times [2020-04-18 03:08:08,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:08,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431820708] [2020-04-18 03:08:08,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:08,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431820708] [2020-04-18 03:08:08,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:08,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:08:08,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2181625] [2020-04-18 03:08:08,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:08:08,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:08,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:08:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:08:08,698 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-04-18 03:08:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:09,048 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-04-18 03:08:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:09,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:08:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:09,100 INFO L225 Difference]: With dead ends: 21489 [2020-04-18 03:08:09,100 INFO L226 Difference]: Without dead ends: 21452 [2020-04-18 03:08:09,100 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:08:09,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-04-18 03:08:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-04-18 03:08:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-04-18 03:08:09,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-04-18 03:08:09,456 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-04-18 03:08:09,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:09,457 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-04-18 03:08:09,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:08:09,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-04-18 03:08:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:08:09,459 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:09,459 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:09,459 INFO L427 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]=== [2020-04-18 03:08:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash 142117429, now seen corresponding path program 2 times [2020-04-18 03:08:09,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:09,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172092328] [2020-04-18 03:08:09,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:09,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172092328] [2020-04-18 03:08:09,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:09,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:08:09,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406029362] [2020-04-18 03:08:09,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:08:09,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:09,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:08:09,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:08:09,521 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-04-18 03:08:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:09,903 INFO L93 Difference]: Finished difference Result 21198 states and 86437 transitions. [2020-04-18 03:08:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:09,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:08:09,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:09,955 INFO L225 Difference]: With dead ends: 21198 [2020-04-18 03:08:09,955 INFO L226 Difference]: Without dead ends: 21161 [2020-04-18 03:08:09,955 INFO L678 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 [2020-04-18 03:08:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21161 states. [2020-04-18 03:08:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21161 to 9396. [2020-04-18 03:08:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-04-18 03:08:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-04-18 03:08:10,315 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-04-18 03:08:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:10,315 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-04-18 03:08:10,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:08:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-04-18 03:08:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:08:10,318 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:10,318 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:10,318 INFO L427 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]=== [2020-04-18 03:08:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:10,318 INFO L82 PathProgramCache]: Analyzing trace with hash 142103758, now seen corresponding path program 2 times [2020-04-18 03:08:10,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:10,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370707206] [2020-04-18 03:08:10,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:10,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370707206] [2020-04-18 03:08:10,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:10,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:08:10,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823871057] [2020-04-18 03:08:10,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:08:10,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:10,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:08:10,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:08:10,372 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-04-18 03:08:10,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:10,806 INFO L93 Difference]: Finished difference Result 21067 states and 85734 transitions. [2020-04-18 03:08:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:10,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:08:10,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:10,890 INFO L225 Difference]: With dead ends: 21067 [2020-04-18 03:08:10,890 INFO L226 Difference]: Without dead ends: 21030 [2020-04-18 03:08:10,890 INFO L678 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 [2020-04-18 03:08:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-04-18 03:08:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 9426. [2020-04-18 03:08:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-04-18 03:08:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-04-18 03:08:11,403 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-04-18 03:08:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:11,403 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-04-18 03:08:11,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:08:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-04-18 03:08:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:11,406 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:11,406 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:11,406 INFO L427 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]=== [2020-04-18 03:08:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:11,406 INFO L82 PathProgramCache]: Analyzing trace with hash 925732074, now seen corresponding path program 1 times [2020-04-18 03:08:11,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:11,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660143830] [2020-04-18 03:08:11,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:11,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660143830] [2020-04-18 03:08:11,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256089488] [2020-04-18 03:08:11,479 INFO L94 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 [2020-04-18 03:08:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:11,563 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:11,563 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:11,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:11,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:11,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283135179] [2020-04-18 03:08:11,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:11,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:11,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:11,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:11,668 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 16 states. [2020-04-18 03:08:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:12,771 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-04-18 03:08:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:12,772 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:12,845 INFO L225 Difference]: With dead ends: 30145 [2020-04-18 03:08:12,845 INFO L226 Difference]: Without dead ends: 30125 [2020-04-18 03:08:12,846 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-04-18 03:08:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-04-18 03:08:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-04-18 03:08:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-04-18 03:08:13,327 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-04-18 03:08:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:13,328 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-04-18 03:08:13,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-04-18 03:08:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:13,331 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:13,331 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:13,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:13,532 INFO L427 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]=== [2020-04-18 03:08:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:13,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1013144212, now seen corresponding path program 1 times [2020-04-18 03:08:13,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:13,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740858558] [2020-04-18 03:08:13,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:13,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740858558] [2020-04-18 03:08:13,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920528722] [2020-04-18 03:08:13,601 INFO L94 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 [2020-04-18 03:08:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:13,683 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:13,684 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:08:13,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:13,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:13,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761872662] [2020-04-18 03:08:13,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:13,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:13,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:13,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:13,797 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 16 states. [2020-04-18 03:08:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:14,744 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-04-18 03:08:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:14,745 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:14,817 INFO L225 Difference]: With dead ends: 29696 [2020-04-18 03:08:14,818 INFO L226 Difference]: Without dead ends: 29676 [2020-04-18 03:08:14,818 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-04-18 03:08:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-04-18 03:08:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-04-18 03:08:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-04-18 03:08:15,456 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-04-18 03:08:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:15,456 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-04-18 03:08:15,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-04-18 03:08:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:15,460 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:15,460 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:15,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:15,661 INFO L427 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]=== [2020-04-18 03:08:15,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:15,661 INFO L82 PathProgramCache]: Analyzing trace with hash 563583274, now seen corresponding path program 2 times [2020-04-18 03:08:15,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:15,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154741153] [2020-04-18 03:08:15,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:15,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154741153] [2020-04-18 03:08:15,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747278948] [2020-04-18 03:08:15,721 INFO L92 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 [2020-04-18 03:08:15,803 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:08:15,803 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:15,804 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:15,805 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:15,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:15,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:15,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489783035] [2020-04-18 03:08:15,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:15,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:15,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:15,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:15,902 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 16 states. [2020-04-18 03:08:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:16,865 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-04-18 03:08:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:16,865 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:16,935 INFO L225 Difference]: With dead ends: 29267 [2020-04-18 03:08:16,935 INFO L226 Difference]: Without dead ends: 29245 [2020-04-18 03:08:16,936 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-04-18 03:08:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-04-18 03:08:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-04-18 03:08:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-04-18 03:08:17,394 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-04-18 03:08:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:17,394 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-04-18 03:08:17,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-04-18 03:08:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:17,397 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:17,398 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:17,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:17,598 INFO L427 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]=== [2020-04-18 03:08:17,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:17,599 INFO L82 PathProgramCache]: Analyzing trace with hash 563576516, now seen corresponding path program 2 times [2020-04-18 03:08:17,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:17,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091321177] [2020-04-18 03:08:17,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:17,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091321177] [2020-04-18 03:08:17,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432428383] [2020-04-18 03:08:17,676 INFO L92 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 [2020-04-18 03:08:17,759 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:08:17,760 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:17,760 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:17,761 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:17,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:17,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:17,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095100509] [2020-04-18 03:08:17,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:17,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:17,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:17,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:17,849 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 16 states. [2020-04-18 03:08:18,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:18,986 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-04-18 03:08:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:18,987 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:19,056 INFO L225 Difference]: With dead ends: 28920 [2020-04-18 03:08:19,056 INFO L226 Difference]: Without dead ends: 28898 [2020-04-18 03:08:19,057 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-04-18 03:08:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-04-18 03:08:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-04-18 03:08:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-04-18 03:08:19,502 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-04-18 03:08:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:19,503 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-04-18 03:08:19,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-04-18 03:08:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:19,506 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:19,506 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:19,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:19,707 INFO L427 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]=== [2020-04-18 03:08:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2052215638, now seen corresponding path program 3 times [2020-04-18 03:08:19,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:19,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758721435] [2020-04-18 03:08:19,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-04-18 03:08:19,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758721435] [2020-04-18 03:08:19,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263881788] [2020-04-18 03:08:19,772 INFO L92 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 [2020-04-18 03:08:19,857 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 03:08:19,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:19,858 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:19,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-04-18 03:08:19,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:19,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:19,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924830621] [2020-04-18 03:08:19,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:19,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:19,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:19,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:19,944 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 16 states. [2020-04-18 03:08:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:21,000 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-04-18 03:08:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:21,001 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:21,072 INFO L225 Difference]: With dead ends: 29038 [2020-04-18 03:08:21,072 INFO L226 Difference]: Without dead ends: 29018 [2020-04-18 03:08:21,072 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-04-18 03:08:21,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-04-18 03:08:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-04-18 03:08:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-04-18 03:08:21,517 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-04-18 03:08:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:21,517 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-04-18 03:08:21,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-04-18 03:08:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:21,521 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:21,521 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:21,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:21,722 INFO L427 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]=== [2020-04-18 03:08:21,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:21,722 INFO L82 PathProgramCache]: Analyzing trace with hash -275395741, now seen corresponding path program 1 times [2020-04-18 03:08:21,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:21,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633192028] [2020-04-18 03:08:21,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:08:21,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633192028] [2020-04-18 03:08:21,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585395382] [2020-04-18 03:08:21,781 INFO L94 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 [2020-04-18 03:08:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:21,872 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:21,873 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 03:08:21,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:21,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:21,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989977795] [2020-04-18 03:08:21,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:21,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:21,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:21,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:21,962 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 16 states. [2020-04-18 03:08:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:23,103 INFO L93 Difference]: Finished difference Result 29417 states and 113034 transitions. [2020-04-18 03:08:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:23,103 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:23,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:23,175 INFO L225 Difference]: With dead ends: 29417 [2020-04-18 03:08:23,176 INFO L226 Difference]: Without dead ends: 29397 [2020-04-18 03:08:23,176 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2020-04-18 03:08:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 8990. [2020-04-18 03:08:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-04-18 03:08:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 40786 transitions. [2020-04-18 03:08:23,620 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 40786 transitions. Word has length 25 [2020-04-18 03:08:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:23,621 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 40786 transitions. [2020-04-18 03:08:23,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 40786 transitions. [2020-04-18 03:08:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:23,624 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:23,624 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:23,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:23,825 INFO L427 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]=== [2020-04-18 03:08:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:23,825 INFO L82 PathProgramCache]: Analyzing trace with hash -724963437, now seen corresponding path program 2 times [2020-04-18 03:08:23,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:23,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983232848] [2020-04-18 03:08:23,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:23,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983232848] [2020-04-18 03:08:23,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461496294] [2020-04-18 03:08:23,897 INFO L92 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 [2020-04-18 03:08:23,972 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:08:23,972 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:23,973 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:23,974 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:24,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:24,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:24,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640518327] [2020-04-18 03:08:24,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:24,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:24,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:24,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:24,074 INFO L87 Difference]: Start difference. First operand 8990 states and 40786 transitions. Second operand 16 states. [2020-04-18 03:08:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:25,072 INFO L93 Difference]: Finished difference Result 29064 states and 111552 transitions. [2020-04-18 03:08:25,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:25,073 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:25,144 INFO L225 Difference]: With dead ends: 29064 [2020-04-18 03:08:25,144 INFO L226 Difference]: Without dead ends: 29037 [2020-04-18 03:08:25,145 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29037 states. [2020-04-18 03:08:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29037 to 8953. [2020-04-18 03:08:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-04-18 03:08:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 40609 transitions. [2020-04-18 03:08:25,750 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 40609 transitions. Word has length 25 [2020-04-18 03:08:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:25,750 INFO L479 AbstractCegarLoop]: Abstraction has 8953 states and 40609 transitions. [2020-04-18 03:08:25,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 40609 transitions. [2020-04-18 03:08:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:25,754 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:25,754 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:25,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:25,955 INFO L427 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]=== [2020-04-18 03:08:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:25,956 INFO L82 PathProgramCache]: Analyzing trace with hash -724977108, now seen corresponding path program 4 times [2020-04-18 03:08:25,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:25,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077937134] [2020-04-18 03:08:25,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:26,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077937134] [2020-04-18 03:08:26,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390569668] [2020-04-18 03:08:26,038 INFO L92 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 [2020-04-18 03:08:26,164 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:08:26,165 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:26,166 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:26,166 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:08:26,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:26,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:26,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282038151] [2020-04-18 03:08:26,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:26,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:26,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:26,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:26,302 INFO L87 Difference]: Start difference. First operand 8953 states and 40609 transitions. Second operand 16 states. [2020-04-18 03:08:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:27,269 INFO L93 Difference]: Finished difference Result 28523 states and 109227 transitions. [2020-04-18 03:08:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:27,269 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:27,355 INFO L225 Difference]: With dead ends: 28523 [2020-04-18 03:08:27,355 INFO L226 Difference]: Without dead ends: 28501 [2020-04-18 03:08:27,355 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28501 states. [2020-04-18 03:08:27,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28501 to 8841. [2020-04-18 03:08:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-04-18 03:08:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-04-18 03:08:27,796 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-04-18 03:08:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:27,796 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-04-18 03:08:27,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-04-18 03:08:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:27,800 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:27,801 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:28,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:28,001 INFO L427 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]=== [2020-04-18 03:08:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:28,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1969402905, now seen corresponding path program 3 times [2020-04-18 03:08:28,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:28,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36978683] [2020-04-18 03:08:28,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:28,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36978683] [2020-04-18 03:08:28,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827536778] [2020-04-18 03:08:28,064 INFO L92 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 [2020-04-18 03:08:28,149 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:08:28,149 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:28,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:28,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:28,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:28,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:28,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584528398] [2020-04-18 03:08:28,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:28,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:28,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:28,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:28,237 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 16 states. [2020-04-18 03:08:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:29,135 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-04-18 03:08:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:29,135 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:29,206 INFO L225 Difference]: With dead ends: 28636 [2020-04-18 03:08:29,206 INFO L226 Difference]: Without dead ends: 28616 [2020-04-18 03:08:29,207 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-04-18 03:08:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-04-18 03:08:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-04-18 03:08:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-04-18 03:08:29,633 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-04-18 03:08:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:29,634 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-04-18 03:08:29,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-04-18 03:08:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:29,639 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:29,640 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:29,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:29,843 INFO L427 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]=== [2020-04-18 03:08:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1576190868, now seen corresponding path program 3 times [2020-04-18 03:08:29,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:29,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950285381] [2020-04-18 03:08:29,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:29,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950285381] [2020-04-18 03:08:29,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852996091] [2020-04-18 03:08:29,912 INFO L92 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 [2020-04-18 03:08:29,991 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:08:29,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:29,992 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:29,992 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:30,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:30,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:30,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196329104] [2020-04-18 03:08:30,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:30,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:30,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:30,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:30,080 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 16 states. [2020-04-18 03:08:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:30,979 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-04-18 03:08:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:30,979 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:31,049 INFO L225 Difference]: With dead ends: 28297 [2020-04-18 03:08:31,049 INFO L226 Difference]: Without dead ends: 28277 [2020-04-18 03:08:31,049 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-04-18 03:08:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-04-18 03:08:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-04-18 03:08:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-04-18 03:08:31,640 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-04-18 03:08:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:31,640 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-04-18 03:08:31,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-04-18 03:08:31,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:31,644 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:31,644 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:31,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:31,844 INFO L427 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]=== [2020-04-18 03:08:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:31,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1673729315, now seen corresponding path program 4 times [2020-04-18 03:08:31,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:31,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802550658] [2020-04-18 03:08:31,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:31,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802550658] [2020-04-18 03:08:31,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421259038] [2020-04-18 03:08:31,909 INFO L92 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 [2020-04-18 03:08:31,993 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:08:31,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:31,994 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:31,995 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:32,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:32,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:32,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457339054] [2020-04-18 03:08:32,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:32,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:32,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:32,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:32,098 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 16 states. [2020-04-18 03:08:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:33,225 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-04-18 03:08:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:33,225 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:33,299 INFO L225 Difference]: With dead ends: 28565 [2020-04-18 03:08:33,299 INFO L226 Difference]: Without dead ends: 28538 [2020-04-18 03:08:33,299 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-04-18 03:08:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-04-18 03:08:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-04-18 03:08:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-04-18 03:08:33,756 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-04-18 03:08:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:33,757 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-04-18 03:08:33,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-04-18 03:08:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:33,760 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:33,761 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:33,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:33,961 INFO L427 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]=== [2020-04-18 03:08:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:33,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1673708886, now seen corresponding path program 4 times [2020-04-18 03:08:33,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:33,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221379855] [2020-04-18 03:08:33,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:34,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221379855] [2020-04-18 03:08:34,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944784343] [2020-04-18 03:08:34,028 INFO L92 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 [2020-04-18 03:08:34,110 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:08:34,111 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:08:34,112 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:08:34,113 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-04-18 03:08:34,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:34,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:08:34,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19208022] [2020-04-18 03:08:34,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:08:34,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:34,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:08:34,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:08:34,200 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 16 states. [2020-04-18 03:08:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:35,279 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-04-18 03:08:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:35,279 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:08:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:35,356 INFO L225 Difference]: With dead ends: 28213 [2020-04-18 03:08:35,356 INFO L226 Difference]: Without dead ends: 28186 [2020-04-18 03:08:35,357 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:08:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-04-18 03:08:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-04-18 03:08:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-04-18 03:08:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-04-18 03:08:35,801 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-04-18 03:08:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:35,801 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-04-18 03:08:35,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:08:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-04-18 03:08:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:35,805 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:35,805 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:36,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:36,006 INFO L427 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]=== [2020-04-18 03:08:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:36,006 INFO L82 PathProgramCache]: Analyzing trace with hash -857609261, now seen corresponding path program 5 times [2020-04-18 03:08:36,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:36,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570668173] [2020-04-18 03:08:36,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:36,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570668173] [2020-04-18 03:08:36,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:36,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:36,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118991480] [2020-04-18 03:08:36,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:36,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:36,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:36,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:36,092 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 9 states. [2020-04-18 03:08:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:36,987 INFO L93 Difference]: Finished difference Result 28226 states and 108274 transitions. [2020-04-18 03:08:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:36,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:37,057 INFO L225 Difference]: With dead ends: 28226 [2020-04-18 03:08:37,057 INFO L226 Difference]: Without dead ends: 28206 [2020-04-18 03:08:37,057 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28206 states. [2020-04-18 03:08:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28206 to 8277. [2020-04-18 03:08:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-04-18 03:08:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 37487 transitions. [2020-04-18 03:08:37,638 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 37487 transitions. Word has length 25 [2020-04-18 03:08:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:37,639 INFO L479 AbstractCegarLoop]: Abstraction has 8277 states and 37487 transitions. [2020-04-18 03:08:37,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 37487 transitions. [2020-04-18 03:08:37,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:37,642 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:37,643 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:37,643 INFO L427 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]=== [2020-04-18 03:08:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:37,643 INFO L82 PathProgramCache]: Analyzing trace with hash -857622932, now seen corresponding path program 5 times [2020-04-18 03:08:37,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:37,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172156458] [2020-04-18 03:08:37,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:37,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172156458] [2020-04-18 03:08:37,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:37,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:37,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339917142] [2020-04-18 03:08:37,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:37,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:37,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:37,702 INFO L87 Difference]: Start difference. First operand 8277 states and 37487 transitions. Second operand 9 states. [2020-04-18 03:08:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:38,544 INFO L93 Difference]: Finished difference Result 27801 states and 106552 transitions. [2020-04-18 03:08:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:38,544 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:38,614 INFO L225 Difference]: With dead ends: 27801 [2020-04-18 03:08:38,614 INFO L226 Difference]: Without dead ends: 27781 [2020-04-18 03:08:38,615 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27781 states. [2020-04-18 03:08:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27781 to 8127. [2020-04-18 03:08:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2020-04-18 03:08:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 36806 transitions. [2020-04-18 03:08:39,046 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 36806 transitions. Word has length 25 [2020-04-18 03:08:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:39,047 INFO L479 AbstractCegarLoop]: Abstraction has 8127 states and 36806 transitions. [2020-04-18 03:08:39,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 36806 transitions. [2020-04-18 03:08:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:39,050 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:39,050 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:39,050 INFO L427 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]=== [2020-04-18 03:08:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash -864096941, now seen corresponding path program 6 times [2020-04-18 03:08:39,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:39,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024950764] [2020-04-18 03:08:39,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:39,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024950764] [2020-04-18 03:08:39,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:39,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:39,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758845165] [2020-04-18 03:08:39,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:39,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:39,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:39,112 INFO L87 Difference]: Start difference. First operand 8127 states and 36806 transitions. Second operand 9 states. [2020-04-18 03:08:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:39,960 INFO L93 Difference]: Finished difference Result 27548 states and 105447 transitions. [2020-04-18 03:08:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:39,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:40,026 INFO L225 Difference]: With dead ends: 27548 [2020-04-18 03:08:40,026 INFO L226 Difference]: Without dead ends: 27521 [2020-04-18 03:08:40,026 INFO L678 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 [2020-04-18 03:08:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2020-04-18 03:08:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 7841. [2020-04-18 03:08:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7841 states. [2020-04-18 03:08:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7841 states to 7841 states and 35578 transitions. [2020-04-18 03:08:40,429 INFO L78 Accepts]: Start accepts. Automaton has 7841 states and 35578 transitions. Word has length 25 [2020-04-18 03:08:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:40,429 INFO L479 AbstractCegarLoop]: Abstraction has 7841 states and 35578 transitions. [2020-04-18 03:08:40,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 7841 states and 35578 transitions. [2020-04-18 03:08:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:40,433 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:40,433 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:40,433 INFO L427 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]=== [2020-04-18 03:08:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash -864117370, now seen corresponding path program 5 times [2020-04-18 03:08:40,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:40,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602636236] [2020-04-18 03:08:40,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:40,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602636236] [2020-04-18 03:08:40,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:40,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:40,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285206887] [2020-04-18 03:08:40,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:40,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:40,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:40,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:40,512 INFO L87 Difference]: Start difference. First operand 7841 states and 35578 transitions. Second operand 9 states. [2020-04-18 03:08:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:41,359 INFO L93 Difference]: Finished difference Result 27167 states and 103966 transitions. [2020-04-18 03:08:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:41,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:41,430 INFO L225 Difference]: With dead ends: 27167 [2020-04-18 03:08:41,431 INFO L226 Difference]: Without dead ends: 27147 [2020-04-18 03:08:41,431 INFO L678 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 [2020-04-18 03:08:41,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27147 states. [2020-04-18 03:08:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27147 to 7743. [2020-04-18 03:08:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7743 states. [2020-04-18 03:08:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 35142 transitions. [2020-04-18 03:08:41,848 INFO L78 Accepts]: Start accepts. Automaton has 7743 states and 35142 transitions. Word has length 25 [2020-04-18 03:08:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:41,849 INFO L479 AbstractCegarLoop]: Abstraction has 7743 states and 35142 transitions. [2020-04-18 03:08:41,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 7743 states and 35142 transitions. [2020-04-18 03:08:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:41,852 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:41,852 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:41,852 INFO L427 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]=== [2020-04-18 03:08:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash -877234772, now seen corresponding path program 6 times [2020-04-18 03:08:41,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:41,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047865577] [2020-04-18 03:08:41,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:41,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047865577] [2020-04-18 03:08:41,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:41,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:41,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322735669] [2020-04-18 03:08:41,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:41,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:41,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:41,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:41,918 INFO L87 Difference]: Start difference. First operand 7743 states and 35142 transitions. Second operand 9 states. [2020-04-18 03:08:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:42,822 INFO L93 Difference]: Finished difference Result 26955 states and 103085 transitions. [2020-04-18 03:08:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:42,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:42,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:42,891 INFO L225 Difference]: With dead ends: 26955 [2020-04-18 03:08:42,891 INFO L226 Difference]: Without dead ends: 26928 [2020-04-18 03:08:42,891 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-04-18 03:08:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 7532. [2020-04-18 03:08:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7532 states. [2020-04-18 03:08:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7532 states to 7532 states and 34256 transitions. [2020-04-18 03:08:43,490 INFO L78 Accepts]: Start accepts. Automaton has 7532 states and 34256 transitions. Word has length 25 [2020-04-18 03:08:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:43,491 INFO L479 AbstractCegarLoop]: Abstraction has 7532 states and 34256 transitions. [2020-04-18 03:08:43,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7532 states and 34256 transitions. [2020-04-18 03:08:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:43,494 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:43,494 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:43,495 INFO L427 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]=== [2020-04-18 03:08:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash -877241530, now seen corresponding path program 6 times [2020-04-18 03:08:43,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:43,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036914565] [2020-04-18 03:08:43,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:08:43,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036914565] [2020-04-18 03:08:43,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:43,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:08:43,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696780086] [2020-04-18 03:08:43,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:08:43,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:43,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:08:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:08:43,564 INFO L87 Difference]: Start difference. First operand 7532 states and 34256 transitions. Second operand 9 states. [2020-04-18 03:08:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:44,514 INFO L93 Difference]: Finished difference Result 26632 states and 101828 transitions. [2020-04-18 03:08:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:08:44,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 03:08:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:44,578 INFO L225 Difference]: With dead ends: 26632 [2020-04-18 03:08:44,578 INFO L226 Difference]: Without dead ends: 26605 [2020-04-18 03:08:44,579 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:08:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2020-04-18 03:08:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 7269. [2020-04-18 03:08:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7269 states. [2020-04-18 03:08:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 33154 transitions. [2020-04-18 03:08:44,966 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 33154 transitions. Word has length 25 [2020-04-18 03:08:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:44,966 INFO L479 AbstractCegarLoop]: Abstraction has 7269 states and 33154 transitions. [2020-04-18 03:08:44,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:08:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 33154 transitions. [2020-04-18 03:08:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:08:44,969 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:44,969 INFO L425 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:44,970 INFO L427 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]=== [2020-04-18 03:08:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1311164244, now seen corresponding path program 1 times [2020-04-18 03:08:44,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:44,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593565795] [2020-04-18 03:08:44,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-04-18 03:08:45,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593565795] [2020-04-18 03:08:45,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:45,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:08:45,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716197564] [2020-04-18 03:08:45,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:08:45,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:45,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:08:45,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:08:45,009 INFO L87 Difference]: Start difference. First operand 7269 states and 33154 transitions. Second operand 5 states. [2020-04-18 03:08:45,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:45,150 INFO L93 Difference]: Finished difference Result 11919 states and 51979 transitions. [2020-04-18 03:08:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:45,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-04-18 03:08:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:45,181 INFO L225 Difference]: With dead ends: 11919 [2020-04-18 03:08:45,181 INFO L226 Difference]: Without dead ends: 11887 [2020-04-18 03:08:45,182 INFO L678 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 [2020-04-18 03:08:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-04-18 03:08:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 8560. [2020-04-18 03:08:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-04-18 03:08:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-04-18 03:08:45,436 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-04-18 03:08:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:45,437 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-04-18 03:08:45,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-04-18 03:08:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 03:08:45,441 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:45,441 INFO L425 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:45,441 INFO L427 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]=== [2020-04-18 03:08:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:45,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1986416772, now seen corresponding path program 1 times [2020-04-18 03:08:45,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:45,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686886114] [2020-04-18 03:08:45,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:08:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:08:45,460 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:08:45,461 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:08:45,461 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-04-18 03:08:45,461 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 03:08:45,462 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-04-18 03:08:45,479 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,479 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,479 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,479 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,480 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,480 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,480 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,480 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,480 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,480 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,480 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,481 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,481 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,481 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,482 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,482 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,482 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,483 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,483 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,483 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,483 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,483 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,483 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,484 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,486 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,486 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,486 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,487 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,487 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,487 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,487 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,487 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,487 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,487 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,488 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,488 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,488 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,489 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,490 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,490 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,498 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,498 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,498 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,498 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,498 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,499 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,499 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,499 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,501 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,502 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,502 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,502 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,502 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,502 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,502 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,502 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,503 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,503 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,503 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,503 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,503 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,503 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,503 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,504 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,504 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,504 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,513 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,514 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,514 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,514 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,514 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,516 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,516 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,516 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,516 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,516 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,517 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,518 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,518 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,518 WARN L315 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,518 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,519 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,519 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,519 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,520 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,520 WARN L315 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,522 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,522 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,522 WARN L315 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,524 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,524 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,525 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,526 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,526 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,527 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,527 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,528 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,528 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,529 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,529 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,530 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,530 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,530 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,531 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,531 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,532 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,532 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,533 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,533 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,533 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,534 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,534 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,534 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:08:45,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-04-18 03:08:45,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:08:45,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:08:45,536 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:08:45,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:08:45,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:08:45,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:08:45,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:08:45,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:08:45,538 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 138 transitions, 396 flow [2020-04-18 03:08:45,538 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-04-18 03:08:45,556 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-04-18 03:08:45,557 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 03:08:45,558 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. [2020-04-18 03:08:45,563 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 138 transitions, 396 flow [2020-04-18 03:08:45,581 INFO L129 PetriNetUnfolder]: 9/173 cut-off events. [2020-04-18 03:08:45,581 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-04-18 03:08:45,583 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. [2020-04-18 03:08:45,588 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-04-18 03:08:45,588 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:08:47,415 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-04-18 03:08:47,704 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-04-18 03:08:47,797 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3678 [2020-04-18 03:08:47,797 INFO L214 etLargeBlockEncoding]: Total number of compositions: 113 [2020-04-18 03:08:47,798 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-04-18 03:08:49,563 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-04-18 03:08:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-04-18 03:08:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-04-18 03:08:49,564 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:49,564 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-04-18 03:08:49,564 INFO L427 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]=== [2020-04-18 03:08:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1298891, now seen corresponding path program 1 times [2020-04-18 03:08:49,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:49,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590491853] [2020-04-18 03:08:49,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:49,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590491853] [2020-04-18 03:08:49,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:49,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 03:08:49,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036884899] [2020-04-18 03:08:49,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 03:08:49,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:49,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 03:08:49,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 03:08:49,576 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-04-18 03:08:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:49,715 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-04-18 03:08:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 03:08:49,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-04-18 03:08:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:49,769 INFO L225 Difference]: With dead ends: 17885 [2020-04-18 03:08:49,769 INFO L226 Difference]: Without dead ends: 16791 [2020-04-18 03:08:49,769 INFO L678 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 [2020-04-18 03:08:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-04-18 03:08:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-04-18 03:08:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-04-18 03:08:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-04-18 03:08:50,836 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-04-18 03:08:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:50,836 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-04-18 03:08:50,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 03:08:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-04-18 03:08:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 03:08:50,836 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:50,837 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:50,837 INFO L427 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]=== [2020-04-18 03:08:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:50,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1091574945, now seen corresponding path program 1 times [2020-04-18 03:08:50,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:50,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59977737] [2020-04-18 03:08:50,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:50,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59977737] [2020-04-18 03:08:50,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:50,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:08:50,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165301994] [2020-04-18 03:08:50,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:08:50,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:50,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:08:50,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:08:50,869 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-04-18 03:08:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:51,126 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-04-18 03:08:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:51,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 03:08:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:51,225 INFO L225 Difference]: With dead ends: 30985 [2020-04-18 03:08:51,225 INFO L226 Difference]: Without dead ends: 30977 [2020-04-18 03:08:51,225 INFO L678 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 [2020-04-18 03:08:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-04-18 03:08:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-04-18 03:08:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-04-18 03:08:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-04-18 03:08:52,293 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-04-18 03:08:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:52,293 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-04-18 03:08:52,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-04-18 03:08:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 03:08:52,293 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:52,293 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:52,293 INFO L427 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]=== [2020-04-18 03:08:52,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:52,294 INFO L82 PathProgramCache]: Analyzing trace with hash -231509072, now seen corresponding path program 1 times [2020-04-18 03:08:52,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:52,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211172278] [2020-04-18 03:08:52,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:08:52,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211172278] [2020-04-18 03:08:52,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:52,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:08:52,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878092596] [2020-04-18 03:08:52,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:08:52,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:52,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:08:52,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:08:52,341 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-04-18 03:08:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:52,630 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-04-18 03:08:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:08:52,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 03:08:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:52,748 INFO L225 Difference]: With dead ends: 36296 [2020-04-18 03:08:52,748 INFO L226 Difference]: Without dead ends: 36280 [2020-04-18 03:08:52,749 INFO L678 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 [2020-04-18 03:08:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-04-18 03:08:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-04-18 03:08:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-04-18 03:08:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-04-18 03:08:55,910 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-04-18 03:08:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:55,910 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-04-18 03:08:55,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:08:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-04-18 03:08:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:08:55,910 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:55,910 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:55,911 INFO L427 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]=== [2020-04-18 03:08:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash -588793474, now seen corresponding path program 1 times [2020-04-18 03:08:55,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:55,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138305392] [2020-04-18 03:08:55,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:55,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138305392] [2020-04-18 03:08:55,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736193247] [2020-04-18 03:08:55,960 INFO L94 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 [2020-04-18 03:08:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:56,052 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:08:56,052 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:08:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:08:56,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:08:56,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:08:56,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875541761] [2020-04-18 03:08:56,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:08:56,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:56,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:08:56,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:08:56,111 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 12 states. [2020-04-18 03:08:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:56,772 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-04-18 03:08:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:56,772 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-04-18 03:08:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:56,952 INFO L225 Difference]: With dead ends: 56720 [2020-04-18 03:08:56,953 INFO L226 Difference]: Without dead ends: 56704 [2020-04-18 03:08:56,953 INFO L678 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 [2020-04-18 03:08:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-04-18 03:08:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-04-18 03:08:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-04-18 03:08:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-04-18 03:08:58,494 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-04-18 03:08:58,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:08:58,494 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-04-18 03:08:58,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:08:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-04-18 03:08:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 03:08:58,494 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:08:58,495 INFO L425 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:08:58,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:08:58,695 INFO L427 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]=== [2020-04-18 03:08:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:08:58,696 INFO L82 PathProgramCache]: Analyzing trace with hash 858081470, now seen corresponding path program 2 times [2020-04-18 03:08:58,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:08:58,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983196650] [2020-04-18 03:08:58,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:08:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:08:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:08:58,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983196650] [2020-04-18 03:08:58,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:08:58,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:08:58,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837319198] [2020-04-18 03:08:58,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:08:58,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:08:58,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:08:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:08:58,769 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-04-18 03:08:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:08:59,419 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-04-18 03:08:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:08:59,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-04-18 03:08:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:08:59,620 INFO L225 Difference]: With dead ends: 58078 [2020-04-18 03:08:59,621 INFO L226 Difference]: Without dead ends: 58061 [2020-04-18 03:08:59,621 INFO L678 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 [2020-04-18 03:09:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-04-18 03:09:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-04-18 03:09:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-04-18 03:09:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-04-18 03:09:03,406 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-04-18 03:09:03,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:03,407 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-04-18 03:09:03,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:09:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-04-18 03:09:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 03:09:03,407 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:03,407 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:03,407 INFO L427 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]=== [2020-04-18 03:09:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:03,408 INFO L82 PathProgramCache]: Analyzing trace with hash 704376303, now seen corresponding path program 1 times [2020-04-18 03:09:03,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:03,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107723372] [2020-04-18 03:09:03,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:03,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107723372] [2020-04-18 03:09:03,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:03,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:09:03,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38881182] [2020-04-18 03:09:03,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:09:03,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:03,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:09:03,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:09:03,436 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-04-18 03:09:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:03,789 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-04-18 03:09:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:09:03,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 03:09:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:03,945 INFO L225 Difference]: With dead ends: 41885 [2020-04-18 03:09:03,945 INFO L226 Difference]: Without dead ends: 41856 [2020-04-18 03:09:03,945 INFO L678 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 [2020-04-18 03:09:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-04-18 03:09:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-04-18 03:09:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-04-18 03:09:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-04-18 03:09:05,345 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-04-18 03:09:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:05,346 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-04-18 03:09:05,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:09:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-04-18 03:09:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:09:05,346 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:05,347 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:05,347 INFO L427 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]=== [2020-04-18 03:09:05,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:05,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1918672061, now seen corresponding path program 1 times [2020-04-18 03:09:05,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:05,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87615749] [2020-04-18 03:09:05,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:05,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87615749] [2020-04-18 03:09:05,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464575938] [2020-04-18 03:09:05,394 INFO L94 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 [2020-04-18 03:09:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:05,488 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:09:05,488 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:05,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:05,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:09:05,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99628296] [2020-04-18 03:09:05,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:09:05,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:09:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:09:05,545 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 12 states. [2020-04-18 03:09:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:06,779 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-04-18 03:09:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:06,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:09:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:07,002 INFO L225 Difference]: With dead ends: 66831 [2020-04-18 03:09:07,002 INFO L226 Difference]: Without dead ends: 66807 [2020-04-18 03:09:07,002 INFO L678 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 [2020-04-18 03:09:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-04-18 03:09:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-04-18 03:09:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-04-18 03:09:08,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-04-18 03:09:08,831 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-04-18 03:09:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:08,831 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-04-18 03:09:08,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:09:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-04-18 03:09:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:09:08,832 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:08,832 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:09,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:09,036 INFO L427 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]=== [2020-04-18 03:09:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:09,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1064014108, now seen corresponding path program 1 times [2020-04-18 03:09:09,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:09,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472423504] [2020-04-18 03:09:09,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:09,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472423504] [2020-04-18 03:09:09,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491767038] [2020-04-18 03:09:09,077 INFO L94 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 [2020-04-18 03:09:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:09,169 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:09:09,170 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:09,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:09,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:09:09,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690417736] [2020-04-18 03:09:09,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:09:09,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:09,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:09:09,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:09:09,226 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 12 states. [2020-04-18 03:09:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:09,939 INFO L93 Difference]: Finished difference Result 69484 states and 328264 transitions. [2020-04-18 03:09:09,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:09,940 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-04-18 03:09:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:10,174 INFO L225 Difference]: With dead ends: 69484 [2020-04-18 03:09:10,174 INFO L226 Difference]: Without dead ends: 69451 [2020-04-18 03:09:10,175 INFO L678 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 [2020-04-18 03:09:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-04-18 03:09:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 28873. [2020-04-18 03:09:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28873 states. [2020-04-18 03:09:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28873 states to 28873 states and 153454 transitions. [2020-04-18 03:09:14,343 INFO L78 Accepts]: Start accepts. Automaton has 28873 states and 153454 transitions. Word has length 19 [2020-04-18 03:09:14,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:14,344 INFO L479 AbstractCegarLoop]: Abstraction has 28873 states and 153454 transitions. [2020-04-18 03:09:14,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:09:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 28873 states and 153454 transitions. [2020-04-18 03:09:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:09:14,345 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:14,345 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:14,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:14,546 INFO L427 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]=== [2020-04-18 03:09:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:14,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1699177508, now seen corresponding path program 2 times [2020-04-18 03:09:14,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:14,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148381060] [2020-04-18 03:09:14,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:14,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148381060] [2020-04-18 03:09:14,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:14,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:09:14,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612156380] [2020-04-18 03:09:14,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:09:14,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:14,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:09:14,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:09:14,589 INFO L87 Difference]: Start difference. First operand 28873 states and 153454 transitions. Second operand 7 states. [2020-04-18 03:09:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:15,296 INFO L93 Difference]: Finished difference Result 70510 states and 333491 transitions. [2020-04-18 03:09:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:15,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:09:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:15,560 INFO L225 Difference]: With dead ends: 70510 [2020-04-18 03:09:15,560 INFO L226 Difference]: Without dead ends: 70477 [2020-04-18 03:09:15,561 INFO L678 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 [2020-04-18 03:09:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70477 states. [2020-04-18 03:09:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70477 to 28942. [2020-04-18 03:09:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28942 states. [2020-04-18 03:09:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 153921 transitions. [2020-04-18 03:09:18,104 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 153921 transitions. Word has length 19 [2020-04-18 03:09:18,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:18,105 INFO L479 AbstractCegarLoop]: Abstraction has 28942 states and 153921 transitions. [2020-04-18 03:09:18,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:09:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 153921 transitions. [2020-04-18 03:09:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 03:09:18,105 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:18,105 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:18,106 INFO L427 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]=== [2020-04-18 03:09:18,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:18,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1699205315, now seen corresponding path program 2 times [2020-04-18 03:09:18,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:18,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366059856] [2020-04-18 03:09:18,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:18,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366059856] [2020-04-18 03:09:18,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:18,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:09:18,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789484067] [2020-04-18 03:09:18,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:09:18,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:18,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:09:18,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:09:18,149 INFO L87 Difference]: Start difference. First operand 28942 states and 153921 transitions. Second operand 7 states. [2020-04-18 03:09:18,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:18,811 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-04-18 03:09:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:18,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-18 03:09:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:19,043 INFO L225 Difference]: With dead ends: 70096 [2020-04-18 03:09:19,044 INFO L226 Difference]: Without dead ends: 70063 [2020-04-18 03:09:19,044 INFO L678 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 [2020-04-18 03:09:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-04-18 03:09:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-04-18 03:09:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-04-18 03:09:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-04-18 03:09:20,932 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-04-18 03:09:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:20,932 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-04-18 03:09:20,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:09:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-04-18 03:09:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:20,933 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:20,933 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:20,933 INFO L427 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]=== [2020-04-18 03:09:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:20,934 INFO L82 PathProgramCache]: Analyzing trace with hash -228866966, now seen corresponding path program 1 times [2020-04-18 03:09:20,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:20,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839670854] [2020-04-18 03:09:20,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:20,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839670854] [2020-04-18 03:09:20,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479908813] [2020-04-18 03:09:20,996 INFO L94 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 [2020-04-18 03:09:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:21,090 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:21,091 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:21,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:21,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:21,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903208227] [2020-04-18 03:09:21,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:21,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:21,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:21,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:21,181 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 16 states. [2020-04-18 03:09:22,747 WARN L192 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 15 [2020-04-18 03:09:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:23,808 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-04-18 03:09:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:23,808 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:09:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:24,124 INFO L225 Difference]: With dead ends: 100731 [2020-04-18 03:09:24,125 INFO L226 Difference]: Without dead ends: 100715 [2020-04-18 03:09:24,125 INFO L678 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 [2020-04-18 03:09:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-04-18 03:09:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28719. [2020-04-18 03:09:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28719 states. [2020-04-18 03:09:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28719 states to 28719 states and 152760 transitions. [2020-04-18 03:09:27,340 INFO L78 Accepts]: Start accepts. Automaton has 28719 states and 152760 transitions. Word has length 21 [2020-04-18 03:09:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:27,340 INFO L479 AbstractCegarLoop]: Abstraction has 28719 states and 152760 transitions. [2020-04-18 03:09:27,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 28719 states and 152760 transitions. [2020-04-18 03:09:27,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:27,341 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:27,342 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:27,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:27,542 INFO L427 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]=== [2020-04-18 03:09:27,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:27,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1302908714, now seen corresponding path program 2 times [2020-04-18 03:09:27,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:27,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936783254] [2020-04-18 03:09:27,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:27,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936783254] [2020-04-18 03:09:27,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281777972] [2020-04-18 03:09:27,603 INFO L92 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 [2020-04-18 03:09:27,694 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:09:27,695 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:27,696 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:27,696 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:09:27,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:27,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:27,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025602018] [2020-04-18 03:09:27,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:27,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:27,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:27,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:27,776 INFO L87 Difference]: Start difference. First operand 28719 states and 152760 transitions. Second operand 16 states. [2020-04-18 03:09:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:29,247 INFO L93 Difference]: Finished difference Result 99876 states and 444348 transitions. [2020-04-18 03:09:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:29,248 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:09:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:29,561 INFO L225 Difference]: With dead ends: 99876 [2020-04-18 03:09:29,561 INFO L226 Difference]: Without dead ends: 99855 [2020-04-18 03:09:29,562 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:09:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99855 states. [2020-04-18 03:09:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99855 to 28343. [2020-04-18 03:09:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-04-18 03:09:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-04-18 03:09:35,096 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-04-18 03:09:35,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:35,096 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-04-18 03:09:35,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-04-18 03:09:35,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:35,098 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:35,098 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:35,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:35,299 INFO L427 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]=== [2020-04-18 03:09:35,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:35,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1149181014, now seen corresponding path program 3 times [2020-04-18 03:09:35,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:35,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56232395] [2020-04-18 03:09:35,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:35,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56232395] [2020-04-18 03:09:35,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007504165] [2020-04-18 03:09:35,358 INFO L92 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 [2020-04-18 03:09:35,449 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 03:09:35,449 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:35,450 INFO L264 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:35,451 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:35,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:35,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:35,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449752306] [2020-04-18 03:09:35,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:35,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:35,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:35,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:35,541 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 16 states. [2020-04-18 03:09:37,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:37,021 INFO L93 Difference]: Finished difference Result 100071 states and 445291 transitions. [2020-04-18 03:09:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:37,022 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:09:37,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:37,346 INFO L225 Difference]: With dead ends: 100071 [2020-04-18 03:09:37,346 INFO L226 Difference]: Without dead ends: 100055 [2020-04-18 03:09:37,347 INFO L678 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 [2020-04-18 03:09:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100055 states. [2020-04-18 03:09:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100055 to 27654. [2020-04-18 03:09:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27654 states. [2020-04-18 03:09:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27654 states to 27654 states and 147080 transitions. [2020-04-18 03:09:40,282 INFO L78 Accepts]: Start accepts. Automaton has 27654 states and 147080 transitions. Word has length 21 [2020-04-18 03:09:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:40,282 INFO L479 AbstractCegarLoop]: Abstraction has 27654 states and 147080 transitions. [2020-04-18 03:09:40,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 27654 states and 147080 transitions. [2020-04-18 03:09:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:40,283 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:40,283 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:40,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:40,484 INFO L427 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]=== [2020-04-18 03:09:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:40,484 INFO L82 PathProgramCache]: Analyzing trace with hash 315341610, now seen corresponding path program 4 times [2020-04-18 03:09:40,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:40,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387021520] [2020-04-18 03:09:40,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:40,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387021520] [2020-04-18 03:09:40,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332557322] [2020-04-18 03:09:40,543 INFO L92 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 [2020-04-18 03:09:40,637 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:09:40,637 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:09:40,637 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:09:40,638 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:09:40,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:40,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:09:40,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133340992] [2020-04-18 03:09:40,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:40,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:40,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:40,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:40,731 INFO L87 Difference]: Start difference. First operand 27654 states and 147080 transitions. Second operand 16 states. [2020-04-18 03:09:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:42,094 INFO L93 Difference]: Finished difference Result 99523 states and 442763 transitions. [2020-04-18 03:09:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:42,095 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-04-18 03:09:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:42,441 INFO L225 Difference]: With dead ends: 99523 [2020-04-18 03:09:42,441 INFO L226 Difference]: Without dead ends: 99502 [2020-04-18 03:09:42,442 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:09:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99502 states. [2020-04-18 03:09:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99502 to 27278. [2020-04-18 03:09:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27278 states. [2020-04-18 03:09:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27278 states to 27278 states and 144959 transitions. [2020-04-18 03:09:45,371 INFO L78 Accepts]: Start accepts. Automaton has 27278 states and 144959 transitions. Word has length 21 [2020-04-18 03:09:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:45,371 INFO L479 AbstractCegarLoop]: Abstraction has 27278 states and 144959 transitions. [2020-04-18 03:09:45,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 27278 states and 144959 transitions. [2020-04-18 03:09:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:45,373 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:45,373 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:45,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:45,574 INFO L427 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]=== [2020-04-18 03:09:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:45,574 INFO L82 PathProgramCache]: Analyzing trace with hash -822012438, now seen corresponding path program 5 times [2020-04-18 03:09:45,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:45,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648836473] [2020-04-18 03:09:45,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:45,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648836473] [2020-04-18 03:09:45,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:45,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:09:45,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613637030] [2020-04-18 03:09:45,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:09:45,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:45,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:09:45,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:09:45,631 INFO L87 Difference]: Start difference. First operand 27278 states and 144959 transitions. Second operand 9 states. [2020-04-18 03:09:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:46,891 INFO L93 Difference]: Finished difference Result 99710 states and 443686 transitions. [2020-04-18 03:09:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:46,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:09:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:47,174 INFO L225 Difference]: With dead ends: 99710 [2020-04-18 03:09:47,175 INFO L226 Difference]: Without dead ends: 99694 [2020-04-18 03:09:47,175 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-04-18 03:09:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99694 states. [2020-04-18 03:09:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99694 to 26597. [2020-04-18 03:09:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2020-04-18 03:09:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 141420 transitions. [2020-04-18 03:09:49,658 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 141420 transitions. Word has length 21 [2020-04-18 03:09:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:49,658 INFO L479 AbstractCegarLoop]: Abstraction has 26597 states and 141420 transitions. [2020-04-18 03:09:49,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:09:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 141420 transitions. [2020-04-18 03:09:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:49,659 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:49,659 INFO L425 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:49,659 INFO L427 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]=== [2020-04-18 03:09:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:49,660 INFO L82 PathProgramCache]: Analyzing trace with hash -848707158, now seen corresponding path program 6 times [2020-04-18 03:09:49,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:49,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132219246] [2020-04-18 03:09:49,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:09:49,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132219246] [2020-04-18 03:09:49,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:49,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:09:49,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562127929] [2020-04-18 03:09:49,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:09:49,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:09:49,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:09:49,721 INFO L87 Difference]: Start difference. First operand 26597 states and 141420 transitions. Second operand 9 states. [2020-04-18 03:09:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:50,918 INFO L93 Difference]: Finished difference Result 98863 states and 439458 transitions. [2020-04-18 03:09:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:09:50,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-04-18 03:09:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:51,184 INFO L225 Difference]: With dead ends: 98863 [2020-04-18 03:09:51,184 INFO L226 Difference]: Without dead ends: 98841 [2020-04-18 03:09:51,184 INFO L678 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 [2020-04-18 03:09:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98841 states. [2020-04-18 03:09:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98841 to 25744. [2020-04-18 03:09:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25744 states. [2020-04-18 03:09:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25744 states to 25744 states and 137181 transitions. [2020-04-18 03:09:53,572 INFO L78 Accepts]: Start accepts. Automaton has 25744 states and 137181 transitions. Word has length 21 [2020-04-18 03:09:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:53,572 INFO L479 AbstractCegarLoop]: Abstraction has 25744 states and 137181 transitions. [2020-04-18 03:09:53,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:09:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand 25744 states and 137181 transitions. [2020-04-18 03:09:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 03:09:53,573 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:53,573 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:53,573 INFO L427 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]=== [2020-04-18 03:09:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:53,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1818695965, now seen corresponding path program 1 times [2020-04-18 03:09:53,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:53,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397938212] [2020-04-18 03:09:53,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:09:53,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397938212] [2020-04-18 03:09:53,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:53,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 03:09:53,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830403227] [2020-04-18 03:09:53,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 03:09:53,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:53,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 03:09:53,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 03:09:53,619 INFO L87 Difference]: Start difference. First operand 25744 states and 137181 transitions. Second operand 5 states. [2020-04-18 03:09:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:53,926 INFO L93 Difference]: Finished difference Result 46463 states and 236107 transitions. [2020-04-18 03:09:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 03:09:53,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-18 03:09:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:54,052 INFO L225 Difference]: With dead ends: 46463 [2020-04-18 03:09:54,052 INFO L226 Difference]: Without dead ends: 46417 [2020-04-18 03:09:54,052 INFO L678 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 [2020-04-18 03:09:54,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46417 states. [2020-04-18 03:09:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46417 to 31960. [2020-04-18 03:09:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-04-18 03:09:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-04-18 03:09:55,753 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-04-18 03:09:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:55,754 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-04-18 03:09:55,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 03:09:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-04-18 03:09:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:55,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:55,755 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:55,755 INFO L427 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]=== [2020-04-18 03:09:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:55,756 INFO L82 PathProgramCache]: Analyzing trace with hash 605532395, now seen corresponding path program 1 times [2020-04-18 03:09:55,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:55,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626510839] [2020-04-18 03:09:55,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:09:55,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626510839] [2020-04-18 03:09:55,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289310509] [2020-04-18 03:09:55,810 INFO L94 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 [2020-04-18 03:09:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:55,904 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:09:55,905 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:09:55,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:55,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:09:55,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147964742] [2020-04-18 03:09:55,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:09:55,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:55,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:09:55,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:09:55,962 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 12 states. [2020-04-18 03:09:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:56,722 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-04-18 03:09:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:09:56,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:09:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:56,937 INFO L225 Difference]: With dead ends: 75380 [2020-04-18 03:09:56,937 INFO L226 Difference]: Without dead ends: 75344 [2020-04-18 03:09:56,937 INFO L678 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 [2020-04-18 03:09:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-04-18 03:09:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-04-18 03:09:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-04-18 03:09:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-04-18 03:09:59,205 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-04-18 03:09:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:59,205 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-04-18 03:09:59,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:09:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-04-18 03:09:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:09:59,207 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:59,207 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:59,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:09:59,408 INFO L427 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]=== [2020-04-18 03:09:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:59,408 INFO L82 PathProgramCache]: Analyzing trace with hash 768040394, now seen corresponding path program 1 times [2020-04-18 03:09:59,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:59,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106108760] [2020-04-18 03:09:59,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:09:59,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106108760] [2020-04-18 03:09:59,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513937000] [2020-04-18 03:09:59,448 INFO L94 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 [2020-04-18 03:09:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:59,540 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:09:59,540 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:09:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:09:59,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:09:59,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:09:59,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641735517] [2020-04-18 03:09:59,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:09:59,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:59,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:09:59,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:09:59,600 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 12 states. [2020-04-18 03:10:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:00,275 INFO L93 Difference]: Finished difference Result 79487 states and 381757 transitions. [2020-04-18 03:10:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:10:00,275 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:10:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:00,495 INFO L225 Difference]: With dead ends: 79487 [2020-04-18 03:10:00,495 INFO L226 Difference]: Without dead ends: 79445 [2020-04-18 03:10:00,496 INFO L678 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 [2020-04-18 03:10:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79445 states. [2020-04-18 03:10:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79445 to 33981. [2020-04-18 03:10:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33981 states. [2020-04-18 03:10:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33981 states to 33981 states and 181710 transitions. [2020-04-18 03:10:02,879 INFO L78 Accepts]: Start accepts. Automaton has 33981 states and 181710 transitions. Word has length 23 [2020-04-18 03:10:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:02,879 INFO L479 AbstractCegarLoop]: Abstraction has 33981 states and 181710 transitions. [2020-04-18 03:10:02,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:10:02,879 INFO L276 IsEmpty]: Start isEmpty. Operand 33981 states and 181710 transitions. [2020-04-18 03:10:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:10:02,881 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:02,881 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:03,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:03,082 INFO L427 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]=== [2020-04-18 03:10:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:03,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1041867770, now seen corresponding path program 1 times [2020-04-18 03:10:03,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:03,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982461369] [2020-04-18 03:10:03,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:10:03,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982461369] [2020-04-18 03:10:03,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146421264] [2020-04-18 03:10:03,122 INFO L94 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 [2020-04-18 03:10:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:03,209 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-04-18 03:10:03,209 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-04-18 03:10:03,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:03,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-04-18 03:10:03,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383228641] [2020-04-18 03:10:03,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:10:03,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:03,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:10:03,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:10:03,256 INFO L87 Difference]: Start difference. First operand 33981 states and 181710 transitions. Second operand 12 states. [2020-04-18 03:10:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:03,957 INFO L93 Difference]: Finished difference Result 82728 states and 398553 transitions. [2020-04-18 03:10:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:10:03,958 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-04-18 03:10:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:04,202 INFO L225 Difference]: With dead ends: 82728 [2020-04-18 03:10:04,202 INFO L226 Difference]: Without dead ends: 82673 [2020-04-18 03:10:04,202 INFO L678 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 [2020-04-18 03:10:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82673 states. [2020-04-18 03:10:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82673 to 34821. [2020-04-18 03:10:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-04-18 03:10:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 186422 transitions. [2020-04-18 03:10:06,668 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 186422 transitions. Word has length 23 [2020-04-18 03:10:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:06,668 INFO L479 AbstractCegarLoop]: Abstraction has 34821 states and 186422 transitions. [2020-04-18 03:10:06,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:10:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 186422 transitions. [2020-04-18 03:10:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:10:06,670 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:06,670 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:06,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:06,871 INFO L427 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]=== [2020-04-18 03:10:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash -284839030, now seen corresponding path program 2 times [2020-04-18 03:10:06,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:06,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027412249] [2020-04-18 03:10:06,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:10:06,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027412249] [2020-04-18 03:10:06,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:10:06,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:10:06,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895853661] [2020-04-18 03:10:06,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:10:06,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:10:06,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:10:06,915 INFO L87 Difference]: Start difference. First operand 34821 states and 186422 transitions. Second operand 7 states. [2020-04-18 03:10:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:07,590 INFO L93 Difference]: Finished difference Result 83507 states and 402693 transitions. [2020-04-18 03:10:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:10:07,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:10:07,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:07,827 INFO L225 Difference]: With dead ends: 83507 [2020-04-18 03:10:07,827 INFO L226 Difference]: Without dead ends: 83452 [2020-04-18 03:10:07,827 INFO L678 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 [2020-04-18 03:10:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83452 states. [2020-04-18 03:10:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83452 to 35694. [2020-04-18 03:10:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35694 states. [2020-04-18 03:10:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35694 states to 35694 states and 191145 transitions. [2020-04-18 03:10:10,332 INFO L78 Accepts]: Start accepts. Automaton has 35694 states and 191145 transitions. Word has length 23 [2020-04-18 03:10:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:10,333 INFO L479 AbstractCegarLoop]: Abstraction has 35694 states and 191145 transitions. [2020-04-18 03:10:10,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:10:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 35694 states and 191145 transitions. [2020-04-18 03:10:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:10:10,335 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:10,335 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:10,335 INFO L427 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]=== [2020-04-18 03:10:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash -284850438, now seen corresponding path program 2 times [2020-04-18 03:10:10,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:10,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683004660] [2020-04-18 03:10:10,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:10:10,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683004660] [2020-04-18 03:10:10,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:10:10,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:10:10,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105234214] [2020-04-18 03:10:10,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:10:10,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:10,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:10:10,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:10:10,376 INFO L87 Difference]: Start difference. First operand 35694 states and 191145 transitions. Second operand 7 states. [2020-04-18 03:10:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:11,097 INFO L93 Difference]: Finished difference Result 83523 states and 402462 transitions. [2020-04-18 03:10:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:10:11,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:10:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:11,340 INFO L225 Difference]: With dead ends: 83523 [2020-04-18 03:10:11,341 INFO L226 Difference]: Without dead ends: 83468 [2020-04-18 03:10:11,341 INFO L678 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 [2020-04-18 03:10:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83468 states. [2020-04-18 03:10:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83468 to 36306. [2020-04-18 03:10:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36306 states. [2020-04-18 03:10:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 194552 transitions. [2020-04-18 03:10:13,779 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 194552 transitions. Word has length 23 [2020-04-18 03:10:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:13,780 INFO L479 AbstractCegarLoop]: Abstraction has 36306 states and 194552 transitions. [2020-04-18 03:10:13,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:10:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 194552 transitions. [2020-04-18 03:10:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-04-18 03:10:13,782 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:13,782 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:13,782 INFO L427 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]=== [2020-04-18 03:10:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:13,782 INFO L82 PathProgramCache]: Analyzing trace with hash -284866837, now seen corresponding path program 2 times [2020-04-18 03:10:13,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:13,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891046645] [2020-04-18 03:10:13,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-04-18 03:10:13,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891046645] [2020-04-18 03:10:13,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:10:13,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 03:10:13,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527370604] [2020-04-18 03:10:13,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:10:13,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:13,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:10:13,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:10:13,828 INFO L87 Difference]: Start difference. First operand 36306 states and 194552 transitions. Second operand 7 states. [2020-04-18 03:10:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:14,473 INFO L93 Difference]: Finished difference Result 83918 states and 404136 transitions. [2020-04-18 03:10:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:10:14,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-04-18 03:10:14,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:14,706 INFO L225 Difference]: With dead ends: 83918 [2020-04-18 03:10:14,707 INFO L226 Difference]: Without dead ends: 83863 [2020-04-18 03:10:14,707 INFO L678 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 [2020-04-18 03:10:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83863 states. [2020-04-18 03:10:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83863 to 37062. [2020-04-18 03:10:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-04-18 03:10:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-04-18 03:10:17,172 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-04-18 03:10:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:17,173 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-04-18 03:10:17,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:10:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-04-18 03:10:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:17,175 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:17,176 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:17,176 INFO L427 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]=== [2020-04-18 03:10:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:17,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1146013160, now seen corresponding path program 1 times [2020-04-18 03:10:17,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:17,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008074780] [2020-04-18 03:10:17,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:10:17,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008074780] [2020-04-18 03:10:17,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239767796] [2020-04-18 03:10:17,231 INFO L94 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 [2020-04-18 03:10:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:17,319 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:17,319 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:10:17,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:17,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:17,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213549113] [2020-04-18 03:10:17,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:17,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:17,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:17,407 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 16 states. [2020-04-18 03:10:18,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:18,958 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-04-18 03:10:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:18,958 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:19,320 INFO L225 Difference]: With dead ends: 122892 [2020-04-18 03:10:19,321 INFO L226 Difference]: Without dead ends: 122862 [2020-04-18 03:10:19,321 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-04-18 03:10:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36727. [2020-04-18 03:10:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36727 states. [2020-04-18 03:10:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36727 states to 36727 states and 196466 transitions. [2020-04-18 03:10:22,408 INFO L78 Accepts]: Start accepts. Automaton has 36727 states and 196466 transitions. Word has length 25 [2020-04-18 03:10:22,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:22,408 INFO L479 AbstractCegarLoop]: Abstraction has 36727 states and 196466 transitions. [2020-04-18 03:10:22,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:22,408 INFO L276 IsEmpty]: Start isEmpty. Operand 36727 states and 196466 transitions. [2020-04-18 03:10:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:22,411 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:22,411 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:22,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:22,612 INFO L427 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]=== [2020-04-18 03:10:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:22,612 INFO L82 PathProgramCache]: Analyzing trace with hash -872185784, now seen corresponding path program 1 times [2020-04-18 03:10:22,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:22,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504968164] [2020-04-18 03:10:22,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:10:22,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504968164] [2020-04-18 03:10:22,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524022592] [2020-04-18 03:10:22,665 INFO L94 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 [2020-04-18 03:10:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:22,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:22,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-04-18 03:10:22,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:22,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:22,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814290323] [2020-04-18 03:10:22,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:22,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:22,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:22,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:22,876 INFO L87 Difference]: Start difference. First operand 36727 states and 196466 transitions. Second operand 16 states. [2020-04-18 03:10:24,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:24,744 INFO L93 Difference]: Finished difference Result 121590 states and 554657 transitions. [2020-04-18 03:10:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:24,745 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:25,086 INFO L225 Difference]: With dead ends: 121590 [2020-04-18 03:10:25,086 INFO L226 Difference]: Without dead ends: 121560 [2020-04-18 03:10:25,086 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121560 states. [2020-04-18 03:10:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121560 to 36513. [2020-04-18 03:10:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36513 states. [2020-04-18 03:10:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36513 states to 36513 states and 195090 transitions. [2020-04-18 03:10:30,642 INFO L78 Accepts]: Start accepts. Automaton has 36513 states and 195090 transitions. Word has length 25 [2020-04-18 03:10:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:30,642 INFO L479 AbstractCegarLoop]: Abstraction has 36513 states and 195090 transitions. [2020-04-18 03:10:30,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 36513 states and 195090 transitions. [2020-04-18 03:10:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:30,645 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:30,645 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:30,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:30,848 INFO L427 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]=== [2020-04-18 03:10:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:30,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2096074712, now seen corresponding path program 2 times [2020-04-18 03:10:30,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:30,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676723828] [2020-04-18 03:10:30,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:30,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676723828] [2020-04-18 03:10:30,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255700289] [2020-04-18 03:10:30,919 INFO L92 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 [2020-04-18 03:10:31,022 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:10:31,022 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:31,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:31,025 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:31,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:31,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:31,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350386021] [2020-04-18 03:10:31,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:31,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:31,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:31,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:31,117 INFO L87 Difference]: Start difference. First operand 36513 states and 195090 transitions. Second operand 16 states. [2020-04-18 03:10:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:32,470 INFO L93 Difference]: Finished difference Result 120395 states and 548664 transitions. [2020-04-18 03:10:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:32,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:32,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:32,799 INFO L225 Difference]: With dead ends: 120395 [2020-04-18 03:10:32,799 INFO L226 Difference]: Without dead ends: 120362 [2020-04-18 03:10:32,800 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120362 states. [2020-04-18 03:10:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120362 to 36444. [2020-04-18 03:10:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36444 states. [2020-04-18 03:10:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36444 states to 36444 states and 194571 transitions. [2020-04-18 03:10:35,866 INFO L78 Accepts]: Start accepts. Automaton has 36444 states and 194571 transitions. Word has length 25 [2020-04-18 03:10:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:35,866 INFO L479 AbstractCegarLoop]: Abstraction has 36444 states and 194571 transitions. [2020-04-18 03:10:35,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 36444 states and 194571 transitions. [2020-04-18 03:10:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:35,869 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:35,869 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:36,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:36,070 INFO L427 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]=== [2020-04-18 03:10:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2096063304, now seen corresponding path program 2 times [2020-04-18 03:10:36,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:36,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47266509] [2020-04-18 03:10:36,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:36,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47266509] [2020-04-18 03:10:36,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341674088] [2020-04-18 03:10:36,123 INFO L92 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 [2020-04-18 03:10:36,210 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:10:36,210 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:36,211 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:36,212 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 03:10:36,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:36,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:36,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987940773] [2020-04-18 03:10:36,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:36,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:36,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:36,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:36,303 INFO L87 Difference]: Start difference. First operand 36444 states and 194571 transitions. Second operand 16 states. [2020-04-18 03:10:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:38,336 INFO L93 Difference]: Finished difference Result 119346 states and 543724 transitions. [2020-04-18 03:10:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:38,336 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:38,675 INFO L225 Difference]: With dead ends: 119346 [2020-04-18 03:10:38,675 INFO L226 Difference]: Without dead ends: 119313 [2020-04-18 03:10:38,675 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119313 states. [2020-04-18 03:10:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119313 to 36040. [2020-04-18 03:10:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-04-18 03:10:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-04-18 03:10:44,167 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-04-18 03:10:44,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:44,167 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-04-18 03:10:44,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-04-18 03:10:44,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:44,171 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:44,171 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:44,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:44,372 INFO L427 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]=== [2020-04-18 03:10:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash 582269272, now seen corresponding path program 3 times [2020-04-18 03:10:44,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:44,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414883518] [2020-04-18 03:10:44,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:44,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414883518] [2020-04-18 03:10:44,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465683640] [2020-04-18 03:10:44,428 INFO L92 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 [2020-04-18 03:10:44,513 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 03:10:44,514 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:44,514 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:44,515 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:44,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:44,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:44,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140370446] [2020-04-18 03:10:44,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:44,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:44,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:44,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:44,593 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 16 states. [2020-04-18 03:10:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:46,127 INFO L93 Difference]: Finished difference Result 119770 states and 545635 transitions. [2020-04-18 03:10:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:46,127 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:46,455 INFO L225 Difference]: With dead ends: 119770 [2020-04-18 03:10:46,455 INFO L226 Difference]: Without dead ends: 119740 [2020-04-18 03:10:46,456 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119740 states. [2020-04-18 03:10:49,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119740 to 35471. [2020-04-18 03:10:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35471 states. [2020-04-18 03:10:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 189238 transitions. [2020-04-18 03:10:49,489 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 189238 transitions. Word has length 25 [2020-04-18 03:10:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:49,489 INFO L479 AbstractCegarLoop]: Abstraction has 35471 states and 189238 transitions. [2020-04-18 03:10:49,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 189238 transitions. [2020-04-18 03:10:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:49,492 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:49,492 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:49,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:49,693 INFO L427 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]=== [2020-04-18 03:10:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:49,693 INFO L82 PathProgramCache]: Analyzing trace with hash 679178599, now seen corresponding path program 1 times [2020-04-18 03:10:49,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:49,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005535788] [2020-04-18 03:10:49,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:10:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005535788] [2020-04-18 03:10:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470567138] [2020-04-18 03:10:49,750 INFO L94 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 [2020-04-18 03:10:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:49,839 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:49,840 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-04-18 03:10:49,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:49,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:49,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522690876] [2020-04-18 03:10:49,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:49,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:49,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:49,920 INFO L87 Difference]: Start difference. First operand 35471 states and 189238 transitions. Second operand 16 states. [2020-04-18 03:10:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:52,042 INFO L93 Difference]: Finished difference Result 121131 states and 553230 transitions. [2020-04-18 03:10:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:10:52,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:52,392 INFO L225 Difference]: With dead ends: 121131 [2020-04-18 03:10:52,393 INFO L226 Difference]: Without dead ends: 121101 [2020-04-18 03:10:52,393 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:10:53,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121101 states. [2020-04-18 03:10:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121101 to 35374. [2020-04-18 03:10:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35374 states. [2020-04-18 03:10:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35374 states to 35374 states and 188534 transitions. [2020-04-18 03:10:58,361 INFO L78 Accepts]: Start accepts. Automaton has 35374 states and 188534 transitions. Word has length 25 [2020-04-18 03:10:58,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:58,361 INFO L479 AbstractCegarLoop]: Abstraction has 35374 states and 188534 transitions. [2020-04-18 03:10:58,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 35374 states and 188534 transitions. [2020-04-18 03:10:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:58,363 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:58,364 INFO L425 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:58,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:10:58,567 INFO L427 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]=== [2020-04-18 03:10:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:58,568 INFO L82 PathProgramCache]: Analyzing trace with hash -647539609, now seen corresponding path program 2 times [2020-04-18 03:10:58,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:58,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331694152] [2020-04-18 03:10:58,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:58,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331694152] [2020-04-18 03:10:58,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39684240] [2020-04-18 03:10:58,623 INFO L92 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 [2020-04-18 03:10:58,712 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:10:58,713 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:10:58,713 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:10:58,714 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:10:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-04-18 03:10:58,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:10:58,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-04-18 03:10:58,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442306088] [2020-04-18 03:10:58,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:58,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:58,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:58,792 INFO L87 Difference]: Start difference. First operand 35374 states and 188534 transitions. Second operand 16 states. [2020-04-18 03:11:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:11:00,197 INFO L93 Difference]: Finished difference Result 120194 states and 548412 transitions. [2020-04-18 03:11:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:11:00,197 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:11:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:11:00,530 INFO L225 Difference]: With dead ends: 120194 [2020-04-18 03:11:00,531 INFO L226 Difference]: Without dead ends: 120154 [2020-04-18 03:11:00,531 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1085, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 03:11:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120154 states. Received shutdown request... [2020-04-18 03:11:03,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:11:03,146 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 03:11:03,150 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 03:11:03,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:11:03 BasicIcfg [2020-04-18 03:11:03,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:11:03,151 INFO L168 Benchmark]: Toolchain (without parser) took 231708.18 ms. Allocated memory was 144.2 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 99.8 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-04-18 03:11:03,152 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:11:03,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.23 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 97.4 MB in the beginning and 160.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:11:03,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.60 ms. Allocated memory is still 200.8 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 03:11:03,152 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 ms. Allocated memory is still 200.8 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:11:03,152 INFO L168 Benchmark]: RCFGBuilder took 456.09 ms. Allocated memory is still 200.8 MB. Free memory was 156.6 MB in the beginning and 136.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-04-18 03:11:03,153 INFO L168 Benchmark]: TraceAbstraction took 230389.18 ms. Allocated memory was 200.8 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 136.1 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2020-04-18 03:11:03,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 144.2 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.23 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 97.4 MB in the beginning and 160.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.60 ms. Allocated memory is still 200.8 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.32 ms. Allocated memory is still 200.8 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.09 ms. Allocated memory is still 200.8 MB. Free memory was 156.6 MB in the beginning and 136.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230389.18 ms. Allocated memory was 200.8 MB in the beginning and 3.4 GB in the end (delta: 3.2 GB). Free memory was 136.1 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 61 ProgramPointsBefore, 18 ProgramPointsAfterwards, 58 TransitionsBefore, 12 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 304 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 486 CheckedPairsTotal, 51 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 80 ProgramPointsBefore, 31 ProgramPointsAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 3 ConcurrentYvCompositions, 4 ChoiceCompositions, 472 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 942 CheckedPairsTotal, 62 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 99 ProgramPointsBefore, 41 ProgramPointsAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 3 ConcurrentYvCompositions, 5 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1426 CheckedPairsTotal, 74 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 118 ProgramPointsBefore, 51 ProgramPointsAfterwards, 106 TransitionsBefore, 33 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 840 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2033 CheckedPairsTotal, 86 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.7s, 137 ProgramPointsBefore, 61 ProgramPointsAfterwards, 122 TransitionsBefore, 39 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 7 ChoiceCompositions, 1058 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2999 CheckedPairsTotal, 104 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 156 ProgramPointsBefore, 71 ProgramPointsAfterwards, 138 TransitionsBefore, 45 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 6 FixpointIterations, 66 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1407 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3678 CheckedPairsTotal, 113 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 230.0s, OverallIterations: 105, TraceHistogramMax: 6, AutomataDifference: 80.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.7s, HoareTripleCheckerStatistics: 4696 SDtfs, 24987 SDslu, 16996 SDs, 0 SdLazy, 31988 SolverSat, 2223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2796 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 2101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14317 ImplicationChecksByTransitivity, 23.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 109.2s AutomataMinimizationTime, 100 MinimizatonAttempts, 2171074 StatesRemovedByMinimization, 92 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 3045 NumberOfCodeBlocks, 3017 NumberOfCodeBlocksAsserted, 178 NumberOfCheckSat, 2810 ConstructedInterpolants, 0 QuantifiedInterpolants, 379096 SizeOfPredicates, 250 NumberOfNonLiveVariables, 5384 ConjunctsInSsa, 391 ConjunctsInUnsatCore, 147 InterpolantComputations, 53 PerfectInterpolantSequences, 900/1652 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