/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:06:28,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:06:28,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:06:28,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:06:28,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:06:28,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:06:28,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:06:28,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:06:28,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:06:28,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:06:28,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:06:28,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:06:28,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:06:28,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:06:28,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:06:28,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:06:28,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:06:28,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:06:28,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:06:28,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:06:28,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:06:28,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:06:28,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:06:28,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:06:28,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 12:06:28,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 12:06:28,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 12:06:28,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 12:06:28,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 12:06:28,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 12:06:28,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:06:28,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:06:28,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:06:28,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:06:28,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:06:28,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:06:28,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:06:28,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:06:28,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:06:28,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:06:28,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:06:28,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:06:28,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:06:28,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:06:28,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:06:28,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:06:28,293 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:06:28,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:06:28,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:06:28,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:06:28,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:06:28,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:06:28,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:06:28,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:06:28,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:06:28,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:06:28,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:06:28,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:06:28,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:06:28,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:06:28,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:06:28,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:06:28,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:06:28,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:06:28,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:06:28,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:06:28,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:06:28,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:06:28,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:06:28,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:06:28,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:06:28,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:06:28,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:06:28,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:06:28,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:06:28,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:06:28,766 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:06:28,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2020-11-09 12:06:28,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b7ced68/a8c7f07252904dbc8edeffb8187a2e1f/FLAG9e6208b47 [2020-11-09 12:06:29,703 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:06:29,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2020-11-09 12:06:29,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b7ced68/a8c7f07252904dbc8edeffb8187a2e1f/FLAG9e6208b47 [2020-11-09 12:06:29,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b7ced68/a8c7f07252904dbc8edeffb8187a2e1f [2020-11-09 12:06:29,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:06:29,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:06:29,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:06:29,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:06:29,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:06:29,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:06:29" (1/1) ... [2020-11-09 12:06:29,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c73176f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:29, skipping insertion in model container [2020-11-09 12:06:29,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:06:29" (1/1) ... [2020-11-09 12:06:29,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:06:29,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:06:30,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:06:30,322 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:06:30,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:06:30,535 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:06:30,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30 WrapperNode [2020-11-09 12:06:30,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:06:30,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:06:30,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:06:30,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:06:30,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:06:30,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:06:30,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:06:30,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:06:30,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (1/1) ... [2020-11-09 12:06:30,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:06:30,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:06:30,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:06:30,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:06:30,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (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 [2020-11-09 12:06:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-09 12:06:30,717 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-09 12:06:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-09 12:06:30,718 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-09 12:06:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:06:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:06:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:06:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:06:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:06:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:06:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:06:30,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:06:30,723 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:06:31,140 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:06:31,141 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-09 12:06:31,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:06:31 BoogieIcfgContainer [2020-11-09 12:06:31,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:06:31,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:06:31,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:06:31,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:06:31,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:06:29" (1/3) ... [2020-11-09 12:06:31,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72939a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:06:31, skipping insertion in model container [2020-11-09 12:06:31,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:06:30" (2/3) ... [2020-11-09 12:06:31,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72939a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:06:31, skipping insertion in model container [2020-11-09 12:06:31,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:06:31" (3/3) ... [2020-11-09 12:06:31,155 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2020-11-09 12:06:31,173 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:06:31,173 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:06:31,179 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:06:31,180 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:06:31,214 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,215 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,215 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,215 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,215 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,216 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,216 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,216 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,216 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,217 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,217 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,217 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,218 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,218 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,218 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,218 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,219 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,219 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,219 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,220 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,220 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,220 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,220 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,220 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,221 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,221 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,221 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,221 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,222 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,222 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,222 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,223 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,223 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,223 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,223 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,224 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,224 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,224 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,225 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,225 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,225 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,226 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,226 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,226 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,227 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,227 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,227 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,228 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,228 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,228 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,229 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,229 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,229 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,229 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,230 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,230 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,233 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,234 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,234 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,234 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,235 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,235 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,242 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,243 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,243 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,243 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,243 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,244 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:06:31,250 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:06:31,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 12:06:31,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:06:31,293 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:06:31,293 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:06:31,293 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:06:31,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:06:31,293 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:06:31,294 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:06:31,294 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:06:31,308 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:06:31,311 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 12:06:31,315 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 12:06:31,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 138 flow [2020-11-09 12:06:31,360 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2020-11-09 12:06:31,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:06:31,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 6/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-09 12:06:31,368 INFO L116 LiptonReduction]: Number of co-enabled transitions 1144 [2020-11-09 12:06:34,061 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-11-09 12:06:34,309 WARN L194 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-11-09 12:06:35,481 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:06:35,631 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:06:35,971 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:06:36,154 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:06:36,778 WARN L194 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 12:06:36,984 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 12:06:37,398 WARN L194 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 12:06:37,611 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 12:06:37,710 INFO L131 LiptonReduction]: Checked pairs total: 1187 [2020-11-09 12:06:37,710 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-11-09 12:06:37,718 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-11-09 12:06:37,728 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-11-09 12:06:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-09 12:06:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 12:06:37,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:37,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 12:06:37,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -805875314, now seen corresponding path program 1 times [2020-11-09 12:06:37,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:37,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019071328] [2020-11-09 12:06:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:37,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019071328] [2020-11-09 12:06:37,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:06:37,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:06:37,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902745193] [2020-11-09 12:06:37,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:06:37,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:38,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:06:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:06:38,005 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-11-09 12:06:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:38,094 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-11-09 12:06:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:06:38,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-09 12:06:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:38,108 INFO L225 Difference]: With dead ends: 75 [2020-11-09 12:06:38,108 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 12:06:38,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:06:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 12:06:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-09 12:06:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 12:06:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-11-09 12:06:38,150 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-11-09 12:06:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:38,150 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-11-09 12:06:38,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:06:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-11-09 12:06:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:06:38,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:38,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:38,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:06:38,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:38,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1351909113, now seen corresponding path program 1 times [2020-11-09 12:06:38,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:38,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992700487] [2020-11-09 12:06:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:38,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992700487] [2020-11-09 12:06:38,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:06:38,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:06:38,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369089464] [2020-11-09 12:06:38,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:06:38,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:38,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:06:38,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:06:38,259 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-11-09 12:06:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:38,314 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-11-09 12:06:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:06:38,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 12:06:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:38,317 INFO L225 Difference]: With dead ends: 56 [2020-11-09 12:06:38,317 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 12:06:38,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:06:38,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 12:06:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-09 12:06:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 12:06:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-11-09 12:06:38,326 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-11-09 12:06:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:38,327 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-11-09 12:06:38,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:06:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-11-09 12:06:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:06:38,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:38,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:38,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:06:38,329 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:38,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:38,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2021583950, now seen corresponding path program 1 times [2020-11-09 12:06:38,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:38,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122474524] [2020-11-09 12:06:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:38,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122474524] [2020-11-09 12:06:38,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:06:38,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:06:38,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440452695] [2020-11-09 12:06:38,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:06:38,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:38,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:06:38,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:06:38,468 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 6 states. [2020-11-09 12:06:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:38,625 INFO L93 Difference]: Finished difference Result 54 states and 124 transitions. [2020-11-09 12:06:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:06:38,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 12:06:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:38,628 INFO L225 Difference]: With dead ends: 54 [2020-11-09 12:06:38,628 INFO L226 Difference]: Without dead ends: 47 [2020-11-09 12:06:38,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:06:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-09 12:06:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-11-09 12:06:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 12:06:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 106 transitions. [2020-11-09 12:06:38,636 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 106 transitions. Word has length 10 [2020-11-09 12:06:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:38,636 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 106 transitions. [2020-11-09 12:06:38,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:06:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 106 transitions. [2020-11-09 12:06:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:06:38,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:38,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:38,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:06:38,638 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:38,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:38,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2101929440, now seen corresponding path program 2 times [2020-11-09 12:06:38,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:38,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380528741] [2020-11-09 12:06:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380528741] [2020-11-09 12:06:38,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:06:38,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:06:38,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976015433] [2020-11-09 12:06:38,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:06:38,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:38,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:06:38,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:06:38,759 INFO L87 Difference]: Start difference. First operand 45 states and 106 transitions. Second operand 6 states. [2020-11-09 12:06:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:38,888 INFO L93 Difference]: Finished difference Result 59 states and 138 transitions. [2020-11-09 12:06:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:06:38,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 12:06:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:38,891 INFO L225 Difference]: With dead ends: 59 [2020-11-09 12:06:38,891 INFO L226 Difference]: Without dead ends: 53 [2020-11-09 12:06:38,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:06:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-09 12:06:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-11-09 12:06:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 12:06:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 96 transitions. [2020-11-09 12:06:38,900 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 96 transitions. Word has length 10 [2020-11-09 12:06:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:38,901 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 96 transitions. [2020-11-09 12:06:38,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:06:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 96 transitions. [2020-11-09 12:06:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:06:38,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:38,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:38,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:06:38,902 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:38,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2082353870, now seen corresponding path program 3 times [2020-11-09 12:06:38,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:38,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594975905] [2020-11-09 12:06:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:39,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594975905] [2020-11-09 12:06:39,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:06:39,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:06:39,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219231345] [2020-11-09 12:06:39,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:06:39,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:39,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:06:39,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:06:39,011 INFO L87 Difference]: Start difference. First operand 41 states and 96 transitions. Second operand 6 states. [2020-11-09 12:06:39,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:39,171 INFO L93 Difference]: Finished difference Result 65 states and 152 transitions. [2020-11-09 12:06:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:06:39,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 12:06:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:39,175 INFO L225 Difference]: With dead ends: 65 [2020-11-09 12:06:39,175 INFO L226 Difference]: Without dead ends: 52 [2020-11-09 12:06:39,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:06:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-09 12:06:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-11-09 12:06:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 12:06:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 99 transitions. [2020-11-09 12:06:39,190 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 99 transitions. Word has length 10 [2020-11-09 12:06:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:39,191 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 99 transitions. [2020-11-09 12:06:39,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:06:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 99 transitions. [2020-11-09 12:06:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:06:39,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:39,196 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:39,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:06:39,196 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:39,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:39,197 INFO L82 PathProgramCache]: Analyzing trace with hash 735328415, now seen corresponding path program 4 times [2020-11-09 12:06:39,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:39,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731507946] [2020-11-09 12:06:39,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:39,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731507946] [2020-11-09 12:06:39,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234163499] [2020-11-09 12:06:39,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:39,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 12:06:39,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:39,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 12:06:39,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:39,579 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 12:06:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:39,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:39,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 12:06:39,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289876004] [2020-11-09 12:06:39,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 12:06:39,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:39,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 12:06:39,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:06:39,597 INFO L87 Difference]: Start difference. First operand 41 states and 99 transitions. Second operand 8 states. [2020-11-09 12:06:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:39,774 INFO L93 Difference]: Finished difference Result 63 states and 147 transitions. [2020-11-09 12:06:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 12:06:39,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-09 12:06:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:39,776 INFO L225 Difference]: With dead ends: 63 [2020-11-09 12:06:39,777 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 12:06:39,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-11-09 12:06:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 12:06:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2020-11-09 12:06:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 12:06:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 87 transitions. [2020-11-09 12:06:39,784 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 87 transitions. Word has length 11 [2020-11-09 12:06:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:39,784 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 87 transitions. [2020-11-09 12:06:39,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 12:06:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 87 transitions. [2020-11-09 12:06:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:06:39,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:39,785 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:39,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-09 12:06:39,990 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash 128488628, now seen corresponding path program 5 times [2020-11-09 12:06:39,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:39,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029909463] [2020-11-09 12:06:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:40,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029909463] [2020-11-09 12:06:40,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935724745] [2020-11-09 12:06:40,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:40,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 12:06:40,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:40,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 12:06:40,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:40,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:40,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:40,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 12:06:40,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683979891] [2020-11-09 12:06:40,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 12:06:40,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 12:06:40,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:06:40,187 INFO L87 Difference]: Start difference. First operand 37 states and 87 transitions. Second operand 8 states. [2020-11-09 12:06:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:40,300 INFO L93 Difference]: Finished difference Result 56 states and 133 transitions. [2020-11-09 12:06:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 12:06:40,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-09 12:06:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:40,302 INFO L225 Difference]: With dead ends: 56 [2020-11-09 12:06:40,302 INFO L226 Difference]: Without dead ends: 51 [2020-11-09 12:06:40,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-11-09 12:06:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-09 12:06:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-11-09 12:06:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-09 12:06:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2020-11-09 12:06:40,308 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11 [2020-11-09 12:06:40,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:40,308 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 105 transitions. [2020-11-09 12:06:40,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 12:06:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions. [2020-11-09 12:06:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:06:40,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:40,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:40,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:40,522 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1416964401, now seen corresponding path program 6 times [2020-11-09 12:06:40,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:40,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714002537] [2020-11-09 12:06:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:40,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714002537] [2020-11-09 12:06:40,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896957045] [2020-11-09 12:06:40,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:40,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-09 12:06:40,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:40,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 12:06:40,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:40,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:40,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:40,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-09 12:06:40,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272525671] [2020-11-09 12:06:40,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 12:06:40,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 12:06:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:06:40,749 INFO L87 Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 8 states. [2020-11-09 12:06:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:40,939 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-11-09 12:06:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 12:06:40,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-09 12:06:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:40,941 INFO L225 Difference]: With dead ends: 56 [2020-11-09 12:06:40,941 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 12:06:40,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-09 12:06:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 12:06:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-11-09 12:06:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-09 12:06:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2020-11-09 12:06:40,955 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 12 [2020-11-09 12:06:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:40,956 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions. [2020-11-09 12:06:40,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 12:06:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions. [2020-11-09 12:06:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:06:40,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:40,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:41,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:41,174 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:41,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1320372483, now seen corresponding path program 7 times [2020-11-09 12:06:41,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:41,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31694156] [2020-11-09 12:06:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:41,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31694156] [2020-11-09 12:06:41,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557030512] [2020-11-09 12:06:41,255 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:41,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 12:06:41,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:41,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:41,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:41,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 12:06:41,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371886194] [2020-11-09 12:06:41,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 12:06:41,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 12:06:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:06:41,381 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 9 states. [2020-11-09 12:06:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:41,584 INFO L93 Difference]: Finished difference Result 63 states and 149 transitions. [2020-11-09 12:06:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 12:06:41,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 12:06:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:41,585 INFO L225 Difference]: With dead ends: 63 [2020-11-09 12:06:41,585 INFO L226 Difference]: Without dead ends: 58 [2020-11-09 12:06:41,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-11-09 12:06:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-09 12:06:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2020-11-09 12:06:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 12:06:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-11-09 12:06:41,591 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 12 [2020-11-09 12:06:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:41,591 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-11-09 12:06:41,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 12:06:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-11-09 12:06:41,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:06:41,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:41,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:41,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:41,794 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:41,795 INFO L82 PathProgramCache]: Analyzing trace with hash -311794613, now seen corresponding path program 8 times [2020-11-09 12:06:41,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:41,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389421075] [2020-11-09 12:06:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:41,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389421075] [2020-11-09 12:06:41,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498427268] [2020-11-09 12:06:41,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:41,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 12:06:41,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:41,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 12:06:41,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:42,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 12:06:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:42,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:42,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 12:06:42,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006288074] [2020-11-09 12:06:42,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 12:06:42,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:42,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 12:06:42,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:06:42,025 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 9 states. [2020-11-09 12:06:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:42,227 INFO L93 Difference]: Finished difference Result 71 states and 167 transitions. [2020-11-09 12:06:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 12:06:42,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 12:06:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:42,229 INFO L225 Difference]: With dead ends: 71 [2020-11-09 12:06:42,229 INFO L226 Difference]: Without dead ends: 62 [2020-11-09 12:06:42,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-11-09 12:06:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-09 12:06:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2020-11-09 12:06:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-09 12:06:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 115 transitions. [2020-11-09 12:06:42,240 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 115 transitions. Word has length 12 [2020-11-09 12:06:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:42,240 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 115 transitions. [2020-11-09 12:06:42,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 12:06:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 115 transitions. [2020-11-09 12:06:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:06:42,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:42,245 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:42,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-09 12:06:42,457 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:42,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2018100772, now seen corresponding path program 9 times [2020-11-09 12:06:42,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:42,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550575862] [2020-11-09 12:06:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:42,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550575862] [2020-11-09 12:06:42,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877638917] [2020-11-09 12:06:42,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:42,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-09 12:06:42,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:42,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 12:06:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:42,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:42,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 12:06:42,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443575415] [2020-11-09 12:06:42,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 12:06:42,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:42,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 12:06:42,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-09 12:06:42,657 INFO L87 Difference]: Start difference. First operand 47 states and 115 transitions. Second operand 10 states. [2020-11-09 12:06:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:42,913 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-11-09 12:06:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 12:06:42,914 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-09 12:06:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:42,915 INFO L225 Difference]: With dead ends: 72 [2020-11-09 12:06:42,915 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 12:06:42,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-11-09 12:06:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 12:06:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-11-09 12:06:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 12:06:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-11-09 12:06:42,920 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 13 [2020-11-09 12:06:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:42,920 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-11-09 12:06:42,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 12:06:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-11-09 12:06:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:06:42,921 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:42,921 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:43,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:43,122 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1075670313, now seen corresponding path program 10 times [2020-11-09 12:06:43,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:43,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331195842] [2020-11-09 12:06:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:43,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331195842] [2020-11-09 12:06:43,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978116038] [2020-11-09 12:06:43,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:43,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 12:06:43,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:43,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 12:06:43,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:43,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:43,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:43,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 12:06:43,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420669110] [2020-11-09 12:06:43,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 12:06:43,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:43,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 12:06:43,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-09 12:06:43,302 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 10 states. [2020-11-09 12:06:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:43,515 INFO L93 Difference]: Finished difference Result 64 states and 153 transitions. [2020-11-09 12:06:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 12:06:43,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-09 12:06:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:43,516 INFO L225 Difference]: With dead ends: 64 [2020-11-09 12:06:43,516 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 12:06:43,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-11-09 12:06:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 12:06:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2020-11-09 12:06:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 12:06:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions. [2020-11-09 12:06:43,521 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13 [2020-11-09 12:06:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:43,522 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 121 transitions. [2020-11-09 12:06:43,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 12:06:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions. [2020-11-09 12:06:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:06:43,523 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:43,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:43,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:43,747 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:43,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:43,748 INFO L82 PathProgramCache]: Analyzing trace with hash 198162772, now seen corresponding path program 11 times [2020-11-09 12:06:43,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:43,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214258302] [2020-11-09 12:06:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:43,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214258302] [2020-11-09 12:06:43,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396323426] [2020-11-09 12:06:43,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:43,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 12:06:43,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:43,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 12:06:43,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:43,919 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:43,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:43,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-09 12:06:43,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288970347] [2020-11-09 12:06:43,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 12:06:43,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:43,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 12:06:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-09 12:06:43,942 INFO L87 Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 10 states. [2020-11-09 12:06:44,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:44,092 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-11-09 12:06:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 12:06:44,092 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-09 12:06:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:44,093 INFO L225 Difference]: With dead ends: 64 [2020-11-09 12:06:44,094 INFO L226 Difference]: Without dead ends: 58 [2020-11-09 12:06:44,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-11-09 12:06:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-09 12:06:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-11-09 12:06:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-09 12:06:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2020-11-09 12:06:44,099 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 14 [2020-11-09 12:06:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:44,099 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2020-11-09 12:06:44,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 12:06:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2020-11-09 12:06:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:06:44,100 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:44,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:44,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-09 12:06:44,311 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:44,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1863413606, now seen corresponding path program 12 times [2020-11-09 12:06:44,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:44,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504465779] [2020-11-09 12:06:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:44,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504465779] [2020-11-09 12:06:44,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959254603] [2020-11-09 12:06:44,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:44,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-09 12:06:44,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:44,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 12:06:44,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:44,482 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:44,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:44,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 12:06:44,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535963688] [2020-11-09 12:06:44,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 12:06:44,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:44,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 12:06:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 12:06:44,501 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand 11 states. [2020-11-09 12:06:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:44,797 INFO L93 Difference]: Finished difference Result 73 states and 173 transitions. [2020-11-09 12:06:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 12:06:44,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 12:06:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:44,814 INFO L225 Difference]: With dead ends: 73 [2020-11-09 12:06:44,814 INFO L226 Difference]: Without dead ends: 68 [2020-11-09 12:06:44,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=359, Unknown=0, NotChecked=0, Total=552 [2020-11-09 12:06:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-09 12:06:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 45. [2020-11-09 12:06:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 12:06:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-11-09 12:06:44,822 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 14 [2020-11-09 12:06:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:44,822 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-11-09 12:06:44,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 12:06:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-11-09 12:06:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:06:44,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:44,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:45,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:45,037 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:45,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1013983880, now seen corresponding path program 13 times [2020-11-09 12:06:45,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:45,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808144076] [2020-11-09 12:06:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:45,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808144076] [2020-11-09 12:06:45,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170778933] [2020-11-09 12:06:45,134 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:45,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 12:06:45,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:45,248 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 12:06:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:45,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:45,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 12:06:45,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547925739] [2020-11-09 12:06:45,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 12:06:45,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:45,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 12:06:45,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-09 12:06:45,265 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 11 states. [2020-11-09 12:06:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:45,598 INFO L93 Difference]: Finished difference Result 81 states and 191 transitions. [2020-11-09 12:06:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 12:06:45,598 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 12:06:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:45,599 INFO L225 Difference]: With dead ends: 81 [2020-11-09 12:06:45,599 INFO L226 Difference]: Without dead ends: 72 [2020-11-09 12:06:45,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2020-11-09 12:06:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-09 12:06:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-11-09 12:06:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-09 12:06:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 131 transitions. [2020-11-09 12:06:45,610 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 131 transitions. Word has length 14 [2020-11-09 12:06:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:45,610 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 131 transitions. [2020-11-09 12:06:45,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 12:06:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 131 transitions. [2020-11-09 12:06:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:06:45,613 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:45,613 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:45,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 12:06:45,826 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:45,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1931272153, now seen corresponding path program 14 times [2020-11-09 12:06:45,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:45,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256987626] [2020-11-09 12:06:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:45,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256987626] [2020-11-09 12:06:45,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760189851] [2020-11-09 12:06:45,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:45,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 12:06:45,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:45,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 12:06:45,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:46,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:46,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 12:06:46,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598775335] [2020-11-09 12:06:46,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 12:06:46,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 12:06:46,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-09 12:06:46,008 INFO L87 Difference]: Start difference. First operand 53 states and 131 transitions. Second operand 12 states. [2020-11-09 12:06:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:46,433 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-11-09 12:06:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 12:06:46,433 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-09 12:06:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:46,435 INFO L225 Difference]: With dead ends: 82 [2020-11-09 12:06:46,435 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 12:06:46,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-11-09 12:06:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 12:06:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2020-11-09 12:06:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 12:06:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-11-09 12:06:46,440 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 15 [2020-11-09 12:06:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:46,440 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-11-09 12:06:46,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 12:06:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-11-09 12:06:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:06:46,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:46,441 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:46,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-09 12:06:46,650 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:46,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1368757306, now seen corresponding path program 15 times [2020-11-09 12:06:46,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:46,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803924558] [2020-11-09 12:06:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:46,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803924558] [2020-11-09 12:06:46,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168414408] [2020-11-09 12:06:46,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:46,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-09 12:06:46,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:46,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 12:06:46,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:46,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:46,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:46,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 12:06:46,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949849329] [2020-11-09 12:06:46,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 12:06:46,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:46,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 12:06:46,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-11-09 12:06:46,832 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 12 states. [2020-11-09 12:06:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:47,159 INFO L93 Difference]: Finished difference Result 72 states and 173 transitions. [2020-11-09 12:06:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 12:06:47,159 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-09 12:06:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:47,163 INFO L225 Difference]: With dead ends: 72 [2020-11-09 12:06:47,163 INFO L226 Difference]: Without dead ends: 67 [2020-11-09 12:06:47,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2020-11-09 12:06:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-09 12:06:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-11-09 12:06:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 12:06:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions. [2020-11-09 12:06:47,168 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15 [2020-11-09 12:06:47,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:47,169 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 137 transitions. [2020-11-09 12:06:47,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 12:06:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions. [2020-11-09 12:06:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 12:06:47,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:47,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:47,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-09 12:06:47,371 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:47,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1455869111, now seen corresponding path program 16 times [2020-11-09 12:06:47,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:47,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475805604] [2020-11-09 12:06:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:47,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475805604] [2020-11-09 12:06:47,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533193070] [2020-11-09 12:06:47,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:47,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 12:06:47,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:47,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 12:06:47,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:47,545 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:47,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:47,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-09 12:06:47,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313651241] [2020-11-09 12:06:47,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 12:06:47,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:47,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 12:06:47,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-09 12:06:47,559 INFO L87 Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 12 states. [2020-11-09 12:06:47,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:47,763 INFO L93 Difference]: Finished difference Result 72 states and 171 transitions. [2020-11-09 12:06:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 12:06:47,766 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-11-09 12:06:47,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:47,767 INFO L225 Difference]: With dead ends: 72 [2020-11-09 12:06:47,767 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 12:06:47,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420 [2020-11-09 12:06:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 12:06:47,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-11-09 12:06:47,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-09 12:06:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 143 transitions. [2020-11-09 12:06:47,773 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 143 transitions. Word has length 16 [2020-11-09 12:06:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:47,773 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 143 transitions. [2020-11-09 12:06:47,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 12:06:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 143 transitions. [2020-11-09 12:06:47,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 12:06:47,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:47,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:47,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-09 12:06:47,986 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:47,987 INFO L82 PathProgramCache]: Analyzing trace with hash -260077303, now seen corresponding path program 17 times [2020-11-09 12:06:47,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:47,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772787795] [2020-11-09 12:06:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:48,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772787795] [2020-11-09 12:06:48,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737339053] [2020-11-09 12:06:48,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:48,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-09 12:06:48,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:48,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 12:06:48,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:48,177 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:48,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:48,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 12:06:48,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618777034] [2020-11-09 12:06:48,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 12:06:48,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:48,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 12:06:48,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 12:06:48,191 INFO L87 Difference]: Start difference. First operand 58 states and 143 transitions. Second operand 13 states. [2020-11-09 12:06:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:48,569 INFO L93 Difference]: Finished difference Result 83 states and 197 transitions. [2020-11-09 12:06:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 12:06:48,569 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 12:06:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:48,570 INFO L225 Difference]: With dead ends: 83 [2020-11-09 12:06:48,570 INFO L226 Difference]: Without dead ends: 78 [2020-11-09 12:06:48,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2020-11-09 12:06:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-09 12:06:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2020-11-09 12:06:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 12:06:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-11-09 12:06:48,576 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 16 [2020-11-09 12:06:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:48,576 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-11-09 12:06:48,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 12:06:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-11-09 12:06:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 12:06:48,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:48,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:48,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:48,778 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:48,779 INFO L82 PathProgramCache]: Analyzing trace with hash -518171259, now seen corresponding path program 18 times [2020-11-09 12:06:48,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:48,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675345216] [2020-11-09 12:06:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:48,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675345216] [2020-11-09 12:06:48,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38605155] [2020-11-09 12:06:48,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:48,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-11-09 12:06:48,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:48,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 12:06:48,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:48,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 12:06:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:48,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:48,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 12:06:48,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580011851] [2020-11-09 12:06:48,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 12:06:48,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:48,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 12:06:48,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 12:06:48,961 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 13 states. [2020-11-09 12:06:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:49,373 INFO L93 Difference]: Finished difference Result 91 states and 215 transitions. [2020-11-09 12:06:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-09 12:06:49,373 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 12:06:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:49,374 INFO L225 Difference]: With dead ends: 91 [2020-11-09 12:06:49,374 INFO L226 Difference]: Without dead ends: 82 [2020-11-09 12:06:49,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=589, Unknown=0, NotChecked=0, Total=870 [2020-11-09 12:06:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-09 12:06:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2020-11-09 12:06:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-09 12:06:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 147 transitions. [2020-11-09 12:06:49,379 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 147 transitions. Word has length 16 [2020-11-09 12:06:49,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:49,379 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 147 transitions. [2020-11-09 12:06:49,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 12:06:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 147 transitions. [2020-11-09 12:06:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:06:49,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:49,380 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:49,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:49,591 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:49,592 INFO L82 PathProgramCache]: Analyzing trace with hash 527563414, now seen corresponding path program 19 times [2020-11-09 12:06:49,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:49,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889899728] [2020-11-09 12:06:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:49,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889899728] [2020-11-09 12:06:49,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344096980] [2020-11-09 12:06:49,689 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:49,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 12:06:49,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:49,777 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 12:06:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:49,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:49,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 12:06:49,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13817428] [2020-11-09 12:06:49,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 12:06:49,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:49,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 12:06:49,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-11-09 12:06:49,792 INFO L87 Difference]: Start difference. First operand 59 states and 147 transitions. Second operand 14 states. [2020-11-09 12:06:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:50,232 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-11-09 12:06:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 12:06:50,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-09 12:06:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:50,235 INFO L225 Difference]: With dead ends: 92 [2020-11-09 12:06:50,235 INFO L226 Difference]: Without dead ends: 83 [2020-11-09 12:06:50,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=719, Unknown=0, NotChecked=0, Total=1056 [2020-11-09 12:06:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-09 12:06:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2020-11-09 12:06:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 12:06:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-11-09 12:06:50,258 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 17 [2020-11-09 12:06:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:50,259 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-11-09 12:06:50,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 12:06:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-11-09 12:06:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:06:50,260 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:50,260 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:50,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 12:06:50,462 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1116588253, now seen corresponding path program 20 times [2020-11-09 12:06:50,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:50,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115980561] [2020-11-09 12:06:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:06:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:50,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115980561] [2020-11-09 12:06:50,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227053312] [2020-11-09 12:06:50,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-11-09 12:06:50,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 12:06:50,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 12:06:50,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 12:06:50,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 12:06:50,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:06:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:06:50,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 12:06:50,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 12:06:50,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924040921] [2020-11-09 12:06:50,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 12:06:50,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:06:50,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 12:06:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-09 12:06:50,697 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 14 states. [2020-11-09 12:06:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:06:51,127 INFO L93 Difference]: Finished difference Result 80 states and 193 transitions. [2020-11-09 12:06:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 12:06:51,127 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-09 12:06:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:06:51,129 INFO L225 Difference]: With dead ends: 80 [2020-11-09 12:06:51,129 INFO L226 Difference]: Without dead ends: 75 [2020-11-09 12:06:51,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-11-09 12:06:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-09 12:06:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-11-09 12:06:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-09 12:06:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions. [2020-11-09 12:06:51,134 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17 [2020-11-09 12:06:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:06:51,134 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 153 transitions. [2020-11-09 12:06:51,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 12:06:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions. [2020-11-09 12:06:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:06:51,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:06:51,135 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:06:51,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-09 12:06:51,347 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:06:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:06:51,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1069116582, now seen corresponding path program 21 times [2020-11-09 12:06:51,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:06:51,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031664325] [2020-11-09 12:06:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:06:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 12:06:51,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 12:06:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 12:06:51,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 12:06:51,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 12:06:51,398 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 12:06:51,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-09 12:06:51,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:06:51 BasicIcfg [2020-11-09 12:06:51,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:06:51,461 INFO L168 Benchmark]: Toolchain (without parser) took 21562.81 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 131.3 MB in the beginning and 194.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 108.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:06:51,461 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:06:51,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.44 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 134.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2020-11-09 12:06:51,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.60 ms. Allocated memory is still 157.3 MB. Free memory was 134.4 MB in the beginning and 132.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:06:51,462 INFO L168 Benchmark]: Boogie Preprocessor took 33.03 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 131.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:06:51,463 INFO L168 Benchmark]: RCFGBuilder took 521.68 ms. Allocated memory is still 157.3 MB. Free memory was 131.2 MB in the beginning and 110.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-09 12:06:51,463 INFO L168 Benchmark]: TraceAbstraction took 20312.82 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 110.8 MB in the beginning and 194.3 MB in the end (delta: -83.5 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. [2020-11-09 12:06:51,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.9 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 632.44 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 134.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.60 ms. Allocated memory is still 157.3 MB. Free memory was 134.4 MB in the beginning and 132.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.03 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 131.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 521.68 ms. Allocated memory is still 157.3 MB. Free memory was 131.2 MB in the beginning and 110.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20312.82 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 110.8 MB in the beginning and 194.3 MB in the end (delta: -83.5 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 784 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 15 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.3s, 65 PlacesBefore, 20 PlacesAfterwards, 64 TransitionsBefore, 16 TransitionsAfterwards, 1144 CoEnabledTransitionPairs, 7 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1187 MoverChecksTotal - CounterExampleResult [Line: 685]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 int i = 3, j = 6; [L704] 0 pthread_t id1, id2; [L705] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L706] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L708] 0 int condI = i >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L696] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L688] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L688] COND TRUE 1 k < 5 [L690] 1 i = j + 1 [L688] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L696] COND TRUE 2 k < 5 [L698] 2 j = i + 1 [L696] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L711] 0 int condJ = j >= (2*5 +6); [L713] COND TRUE 0 condI || condJ [L685] COND FALSE 0 !(0) [L685] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.1s, OverallIterations: 23, TraceHistogramMax: 5, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 335 SDtfs, 868 SDslu, 1008 SDs, 0 SdLazy, 1127 SolverSat, 511 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 580 GetRequests, 193 SyntacticMatches, 14 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 322 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 481 ConstructedInterpolants, 0 QuantifiedInterpolants, 26593 SizeOfPredicates, 105 NumberOfNonLiveVariables, 1836 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 39 InterpolantComputations, 5 PerfectInterpolantSequences, 0/240 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 proved your program to be incorrect! Received shutdown request...