/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/sigma.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 15:53:20,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 15:53:20,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 15:53:20,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 15:53:20,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 15:53:20,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 15:53:20,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 15:53:20,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 15:53:20,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 15:53:20,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 15:53:20,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 15:53:20,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 15:53:20,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 15:53:20,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 15:53:20,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 15:53:20,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 15:53:20,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 15:53:20,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 15:53:20,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 15:53:20,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 15:53:20,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-08-12 15:53:20,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 15:53:20,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 15:53:20,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 15:53:20,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 15:53:20,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 15:53:20,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 15:53:20,567 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 15:53:20,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 15:53:20,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 15:53:20,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 15:53:20,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 15:53:20,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 15:53:20,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 15:53:20,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 15:53:20,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 15:53:20,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 15:53:20,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 15:53:20,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 15:53:20,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 15:53:20,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 15:53:20,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 15:53:20,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 15:53:20,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 15:53:20,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 15:53:20,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 15:53:20,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 15:53:20,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 15:53:20,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 15:53:20,571 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 15:53:20,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 15:53:20,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 15:53:20,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 15:53:20,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 15:53:20,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 15:53:20,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 15:53:20,906 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 15:53:20,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sigma.i [2021-08-12 15:53:20,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab6918f6/9a86459027a240bf9a8782fcfd0b4c65/FLAG6f7426ca6 [2021-08-12 15:53:21,588 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 15:53:21,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i [2021-08-12 15:53:21,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab6918f6/9a86459027a240bf9a8782fcfd0b4c65/FLAG6f7426ca6 [2021-08-12 15:53:21,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab6918f6/9a86459027a240bf9a8782fcfd0b4c65 [2021-08-12 15:53:21,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 15:53:21,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 15:53:21,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 15:53:21,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 15:53:21,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 15:53:21,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 03:53:21" (1/1) ... [2021-08-12 15:53:21,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5740ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:21, skipping insertion in model container [2021-08-12 15:53:21,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 03:53:21" (1/1) ... [2021-08-12 15:53:21,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 15:53:22,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 15:53:22,431 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i[55285,55298] [2021-08-12 15:53:22,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 15:53:22,454 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 15:53:22,496 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sigma.i[55285,55298] [2021-08-12 15:53:22,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 15:53:22,618 INFO L208 MainTranslator]: Completed translation [2021-08-12 15:53:22,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22 WrapperNode [2021-08-12 15:53:22,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 15:53:22,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 15:53:22,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 15:53:22,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 15:53:22,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 15:53:22,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 15:53:22,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 15:53:22,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 15:53:22,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (1/1) ... [2021-08-12 15:53:22,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 15:53:22,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 15:53:22,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 15:53:22,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 15:53:22,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (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 [2021-08-12 15:53:22,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 15:53:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-12 15:53:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 15:53:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-12 15:53:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 15:53:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-12 15:53:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-12 15:53:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-12 15:53:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-08-12 15:53:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-08-12 15:53:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 15:53:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 15:53:22,765 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 15:53:23,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 15:53:23,185 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-12 15:53:23,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 03:53:23 BoogieIcfgContainer [2021-08-12 15:53:23,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 15:53:23,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 15:53:23,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 15:53:23,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 15:53:23,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 03:53:21" (1/3) ... [2021-08-12 15:53:23,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97cef15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 03:53:23, skipping insertion in model container [2021-08-12 15:53:23,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 03:53:22" (2/3) ... [2021-08-12 15:53:23,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97cef15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 03:53:23, skipping insertion in model container [2021-08-12 15:53:23,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 03:53:23" (3/3) ... [2021-08-12 15:53:23,193 INFO L111 eAbstractionObserver]: Analyzing ICFG sigma.i [2021-08-12 15:53:23,198 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 15:53:23,199 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 15:53:23,200 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 15:53:23,232 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,232 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,232 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,232 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,233 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,233 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,233 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,233 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,233 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,233 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,233 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,234 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,236 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,236 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,236 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,237 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:23,248 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-12 15:53:23,288 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 15:53:23,317 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 15:53:23,318 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 15:53:23,318 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 15:53:23,318 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 15:53:23,318 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 15:53:23,318 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 15:53:23,318 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 15:53:23,318 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 15:53:23,332 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 92 transitions, 192 flow [2021-08-12 15:53:23,369 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:23,389 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:23,389 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:23,390 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:23,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:23,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1750532089, now seen corresponding path program 1 times [2021-08-12 15:53:23,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:23,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857390241] [2021-08-12 15:53:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:23,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:23,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857390241] [2021-08-12 15:53:23,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857390241] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:23,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:23,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 15:53:23,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665908038] [2021-08-12 15:53:23,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 15:53:23,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:23,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 15:53:23,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:23,664 INFO L87 Difference]: Start difference. First operand has 288 states, 282 states have (on average 1.7304964539007093) internal successors, (488), 287 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:23,716 INFO L93 Difference]: Finished difference Result 545 states and 940 transitions. [2021-08-12 15:53:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 15:53:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:23,738 INFO L225 Difference]: With dead ends: 545 [2021-08-12 15:53:23,739 INFO L226 Difference]: Without dead ends: 241 [2021-08-12 15:53:23,745 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-08-12 15:53:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-08-12 15:53:23,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 238 states have (on average 1.6260504201680672) internal successors, (387), 240 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 387 transitions. [2021-08-12 15:53:23,790 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 387 transitions. Word has length 41 [2021-08-12 15:53:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:23,791 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 387 transitions. [2021-08-12 15:53:23,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 387 transitions. [2021-08-12 15:53:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:23,792 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:23,793 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:23,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 15:53:23,793 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:23,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1031341464, now seen corresponding path program 1 times [2021-08-12 15:53:23,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:23,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147975619] [2021-08-12 15:53:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:23,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:23,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147975619] [2021-08-12 15:53:23,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147975619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:23,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:23,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 15:53:23,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719069714] [2021-08-12 15:53:23,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 15:53:23,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 15:53:23,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:23,885 INFO L87 Difference]: Start difference. First operand 241 states and 387 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:23,946 INFO L93 Difference]: Finished difference Result 257 states and 403 transitions. [2021-08-12 15:53:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 15:53:23,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:23,949 INFO L225 Difference]: With dead ends: 257 [2021-08-12 15:53:23,949 INFO L226 Difference]: Without dead ends: 165 [2021-08-12 15:53:23,950 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-12 15:53:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-08-12 15:53:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 164 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 245 transitions. [2021-08-12 15:53:23,962 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 245 transitions. Word has length 41 [2021-08-12 15:53:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:23,963 INFO L482 AbstractCegarLoop]: Abstraction has 165 states and 245 transitions. [2021-08-12 15:53:23,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 245 transitions. [2021-08-12 15:53:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-12 15:53:23,965 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:23,965 INFO L550 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:23,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 15:53:23,965 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:23,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:23,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2107954742, now seen corresponding path program 1 times [2021-08-12 15:53:23,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:23,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28454997] [2021-08-12 15:53:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:24,005 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:24,044 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:24,082 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 15:53:24,082 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 15:53:24,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 15:53:24,083 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 15:53:24,083 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-08-12 15:53:24,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,091 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,091 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,091 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,091 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,092 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,092 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,092 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,092 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,092 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,093 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,094 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,094 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,094 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,094 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,094 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,095 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,095 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,095 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,096 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,097 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,097 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,097 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:24,100 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-12 15:53:24,101 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 15:53:24,102 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 15:53:24,102 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 15:53:24,102 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 15:53:24,103 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 15:53:24,103 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 15:53:24,103 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 15:53:24,103 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 15:53:24,103 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 15:53:24,105 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 98 transitions, 214 flow [2021-08-12 15:53:24,145 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:24,152 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:24,152 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:24,153 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:24,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1058894999, now seen corresponding path program 1 times [2021-08-12 15:53:24,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:24,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742962520] [2021-08-12 15:53:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:24,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:24,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742962520] [2021-08-12 15:53:24,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742962520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:24,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:24,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 15:53:24,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921404013] [2021-08-12 15:53:24,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 15:53:24,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:24,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 15:53:24,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:24,186 INFO L87 Difference]: Start difference. First operand has 1538 states, 1528 states have (on average 2.4404450261780104) internal successors, (3729), 1537 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:24,273 INFO L93 Difference]: Finished difference Result 3015 states and 7348 transitions. [2021-08-12 15:53:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 15:53:24,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:24,286 INFO L225 Difference]: With dead ends: 3015 [2021-08-12 15:53:24,287 INFO L226 Difference]: Without dead ends: 1281 [2021-08-12 15:53:24,290 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:24,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-08-12 15:53:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1281. [2021-08-12 15:53:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1276 states have (on average 2.34717868338558) internal successors, (2995), 1280 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 2995 transitions. [2021-08-12 15:53:24,371 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 2995 transitions. Word has length 41 [2021-08-12 15:53:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:24,372 INFO L482 AbstractCegarLoop]: Abstraction has 1281 states and 2995 transitions. [2021-08-12 15:53:24,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 2995 transitions. [2021-08-12 15:53:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:24,374 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:24,374 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:24,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 15:53:24,375 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:24,375 INFO L82 PathProgramCache]: Analyzing trace with hash -339704374, now seen corresponding path program 1 times [2021-08-12 15:53:24,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:24,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515150952] [2021-08-12 15:53:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:24,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:24,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515150952] [2021-08-12 15:53:24,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515150952] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:24,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:24,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 15:53:24,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317180225] [2021-08-12 15:53:24,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 15:53:24,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:24,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 15:53:24,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:24,470 INFO L87 Difference]: Start difference. First operand 1281 states and 2995 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:24,571 INFO L93 Difference]: Finished difference Result 1396 states and 3187 transitions. [2021-08-12 15:53:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 15:53:24,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:24,579 INFO L225 Difference]: With dead ends: 1396 [2021-08-12 15:53:24,579 INFO L226 Difference]: Without dead ends: 929 [2021-08-12 15:53:24,581 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-08-12 15:53:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 910. [2021-08-12 15:53:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 906 states have (on average 2.2097130242825607) internal successors, (2002), 909 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 2002 transitions. [2021-08-12 15:53:24,612 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 2002 transitions. Word has length 41 [2021-08-12 15:53:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:24,612 INFO L482 AbstractCegarLoop]: Abstraction has 910 states and 2002 transitions. [2021-08-12 15:53:24,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2002 transitions. [2021-08-12 15:53:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-12 15:53:24,615 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:24,615 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:24,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 15:53:24,615 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash 367933672, now seen corresponding path program 1 times [2021-08-12 15:53:24,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:24,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434949923] [2021-08-12 15:53:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:24,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:24,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434949923] [2021-08-12 15:53:24,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434949923] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:24,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:24,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 15:53:24,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016339003] [2021-08-12 15:53:24,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 15:53:24,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:24,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 15:53:24,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 15:53:24,733 INFO L87 Difference]: Start difference. First operand 910 states and 2002 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:24,877 INFO L93 Difference]: Finished difference Result 1061 states and 2257 transitions. [2021-08-12 15:53:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 15:53:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-08-12 15:53:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:24,884 INFO L225 Difference]: With dead ends: 1061 [2021-08-12 15:53:24,884 INFO L226 Difference]: Without dead ends: 995 [2021-08-12 15:53:24,885 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-12 15:53:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2021-08-12 15:53:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 921. [2021-08-12 15:53:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 917 states have (on average 2.2039258451472192) internal successors, (2021), 920 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 2021 transitions. [2021-08-12 15:53:24,915 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 2021 transitions. Word has length 69 [2021-08-12 15:53:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:24,917 INFO L482 AbstractCegarLoop]: Abstraction has 921 states and 2021 transitions. [2021-08-12 15:53:24,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 2021 transitions. [2021-08-12 15:53:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-12 15:53:24,920 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:24,920 INFO L550 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:24,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 15:53:24,920 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:24,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1437284449, now seen corresponding path program 1 times [2021-08-12 15:53:24,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:24,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923838264] [2021-08-12 15:53:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:24,989 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:25,041 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:25,057 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 15:53:25,057 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 15:53:25,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 15:53:25,057 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 15:53:25,058 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-08-12 15:53:25,075 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,076 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,076 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,076 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,076 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,076 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,076 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,077 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,078 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,079 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,080 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,080 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,080 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,080 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,080 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,082 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,082 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,082 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,083 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,084 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,084 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,085 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,087 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:25,092 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-12 15:53:25,094 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 15:53:25,094 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 15:53:25,100 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 15:53:25,100 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 15:53:25,100 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 15:53:25,100 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 15:53:25,100 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 15:53:25,100 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 15:53:25,100 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 15:53:25,105 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 104 transitions, 238 flow [2021-08-12 15:53:25,558 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:25,592 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:25,592 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:25,592 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:25,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1201436719, now seen corresponding path program 1 times [2021-08-12 15:53:25,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:25,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220002010] [2021-08-12 15:53:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:25,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:25,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220002010] [2021-08-12 15:53:25,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220002010] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:25,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:25,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 15:53:25,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58968751] [2021-08-12 15:53:25,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 15:53:25,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:25,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 15:53:25,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:25,657 INFO L87 Difference]: Start difference. First operand has 8718 states, 8700 states have (on average 3.1447126436781607) internal successors, (27359), 8717 states have internal predecessors, (27359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:25,999 INFO L93 Difference]: Finished difference Result 17195 states and 54044 transitions. [2021-08-12 15:53:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 15:53:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:26,075 INFO L225 Difference]: With dead ends: 17195 [2021-08-12 15:53:26,076 INFO L226 Difference]: Without dead ends: 7201 [2021-08-12 15:53:26,092 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2021-08-12 15:53:26,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 7201. [2021-08-12 15:53:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7201 states, 7192 states have (on average 3.060622914349277) internal successors, (22012), 7200 states have internal predecessors, (22012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7201 states to 7201 states and 22012 transitions. [2021-08-12 15:53:26,437 INFO L78 Accepts]: Start accepts. Automaton has 7201 states and 22012 transitions. Word has length 41 [2021-08-12 15:53:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:26,437 INFO L482 AbstractCegarLoop]: Abstraction has 7201 states and 22012 transitions. [2021-08-12 15:53:26,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 7201 states and 22012 transitions. [2021-08-12 15:53:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:26,438 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:26,438 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:26,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 15:53:26,439 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash -482246094, now seen corresponding path program 1 times [2021-08-12 15:53:26,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:26,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430482819] [2021-08-12 15:53:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:26,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:26,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430482819] [2021-08-12 15:53:26,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430482819] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:26,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:26,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 15:53:26,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59491396] [2021-08-12 15:53:26,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 15:53:26,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 15:53:26,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:26,480 INFO L87 Difference]: Start difference. First operand 7201 states and 22012 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:26,726 INFO L93 Difference]: Finished difference Result 7831 states and 23521 transitions. [2021-08-12 15:53:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 15:53:26,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:26,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:26,772 INFO L225 Difference]: With dead ends: 7831 [2021-08-12 15:53:26,772 INFO L226 Difference]: Without dead ends: 5489 [2021-08-12 15:53:26,779 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2021-08-12 15:53:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5355. [2021-08-12 15:53:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5355 states, 5347 states have (on average 2.9145315129979426) internal successors, (15584), 5354 states have internal predecessors, (15584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 15584 transitions. [2021-08-12 15:53:27,011 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 15584 transitions. Word has length 41 [2021-08-12 15:53:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:27,012 INFO L482 AbstractCegarLoop]: Abstraction has 5355 states and 15584 transitions. [2021-08-12 15:53:27,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 15584 transitions. [2021-08-12 15:53:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-12 15:53:27,014 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:27,014 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:27,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 15:53:27,014 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:27,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1599598941, now seen corresponding path program 1 times [2021-08-12 15:53:27,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:27,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404104250] [2021-08-12 15:53:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:27,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:27,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404104250] [2021-08-12 15:53:27,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404104250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:27,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:27,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 15:53:27,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842124924] [2021-08-12 15:53:27,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 15:53:27,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:27,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 15:53:27,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 15:53:27,110 INFO L87 Difference]: Start difference. First operand 5355 states and 15584 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:27,356 INFO L93 Difference]: Finished difference Result 6581 states and 18539 transitions. [2021-08-12 15:53:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 15:53:27,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-08-12 15:53:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:27,412 INFO L225 Difference]: With dead ends: 6581 [2021-08-12 15:53:27,412 INFO L226 Difference]: Without dead ends: 6035 [2021-08-12 15:53:27,417 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-12 15:53:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2021-08-12 15:53:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 5446. [2021-08-12 15:53:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 5438 states have (on average 2.906767193821258) internal successors, (15807), 5445 states have internal predecessors, (15807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 15807 transitions. [2021-08-12 15:53:27,657 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 15807 transitions. Word has length 69 [2021-08-12 15:53:27,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:27,658 INFO L482 AbstractCegarLoop]: Abstraction has 5446 states and 15807 transitions. [2021-08-12 15:53:27,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 15807 transitions. [2021-08-12 15:53:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-08-12 15:53:27,662 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:27,662 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:27,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-12 15:53:27,663 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:27,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2100395439, now seen corresponding path program 1 times [2021-08-12 15:53:27,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:27,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106778366] [2021-08-12 15:53:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:27,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:27,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106778366] [2021-08-12 15:53:27,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106778366] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 15:53:27,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146986948] [2021-08-12 15:53:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 15:53:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:27,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-12 15:53:27,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 15:53:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:28,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146986948] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 15:53:28,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 15:53:28,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-12 15:53:28,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138754642] [2021-08-12 15:53:28,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-12 15:53:28,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:28,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-12 15:53:28,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-12 15:53:28,038 INFO L87 Difference]: Start difference. First operand 5446 states and 15807 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:28,331 INFO L93 Difference]: Finished difference Result 5598 states and 16104 transitions. [2021-08-12 15:53:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-12 15:53:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-08-12 15:53:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:28,363 INFO L225 Difference]: With dead ends: 5598 [2021-08-12 15:53:28,364 INFO L226 Difference]: Without dead ends: 5551 [2021-08-12 15:53:28,366 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-08-12 15:53:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2021-08-12 15:53:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 5436. [2021-08-12 15:53:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5436 states, 5428 states have (on average 2.9078850405305823) internal successors, (15784), 5435 states have internal predecessors, (15784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5436 states to 5436 states and 15784 transitions. [2021-08-12 15:53:28,545 INFO L78 Accepts]: Start accepts. Automaton has 5436 states and 15784 transitions. Word has length 76 [2021-08-12 15:53:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:28,546 INFO L482 AbstractCegarLoop]: Abstraction has 5436 states and 15784 transitions. [2021-08-12 15:53:28,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5436 states and 15784 transitions. [2021-08-12 15:53:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-08-12 15:53:28,556 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:28,557 INFO L550 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:28,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-12 15:53:28,779 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2017283657, now seen corresponding path program 1 times [2021-08-12 15:53:28,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:28,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142484091] [2021-08-12 15:53:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:28,806 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:28,832 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:28,910 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 15:53:28,910 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 15:53:28,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-12 15:53:28,910 WARN L235 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 15:53:28,910 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-08-12 15:53:28,920 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,920 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,920 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,921 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,922 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,923 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,924 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,925 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,926 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,926 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,926 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,926 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,927 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,927 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,927 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,928 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,929 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,929 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,929 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,929 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,930 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,930 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,930 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,931 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:28,935 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-12 15:53:28,937 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 15:53:28,937 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 15:53:28,938 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 15:53:28,938 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 15:53:28,938 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 15:53:28,938 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 15:53:28,938 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 15:53:28,938 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 15:53:28,938 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 15:53:28,942 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 110 transitions, 264 flow [2021-08-12 15:53:33,334 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:33,504 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:33,505 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:33,505 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash 319858688, now seen corresponding path program 1 times [2021-08-12 15:53:33,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:33,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135865468] [2021-08-12 15:53:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:33,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:33,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135865468] [2021-08-12 15:53:33,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135865468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:33,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:33,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 15:53:33,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991559816] [2021-08-12 15:53:33,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 15:53:33,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:33,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 15:53:33,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:33,608 INFO L87 Difference]: Start difference. First operand has 50198 states, 50164 states have (on average 3.8379913882465515) internal successors, (192529), 50197 states have internal predecessors, (192529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:35,080 INFO L93 Difference]: Finished difference Result 99075 states and 380280 transitions. [2021-08-12 15:53:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 15:53:35,082 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:35,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:35,735 INFO L225 Difference]: With dead ends: 99075 [2021-08-12 15:53:35,736 INFO L226 Difference]: Without dead ends: 41121 [2021-08-12 15:53:35,809 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:53:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41121 states. [2021-08-12 15:53:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41121 to 41121. [2021-08-12 15:53:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41121 states, 41104 states have (on average 3.760923511093811) internal successors, (154589), 41120 states have internal predecessors, (154589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41121 states to 41121 states and 154589 transitions. [2021-08-12 15:53:37,895 INFO L78 Accepts]: Start accepts. Automaton has 41121 states and 154589 transitions. Word has length 41 [2021-08-12 15:53:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:37,895 INFO L482 AbstractCegarLoop]: Abstraction has 41121 states and 154589 transitions. [2021-08-12 15:53:37,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 41121 states and 154589 transitions. [2021-08-12 15:53:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:53:37,896 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:37,896 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:37,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-12 15:53:37,896 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:37,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1458966624, now seen corresponding path program 1 times [2021-08-12 15:53:37,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:37,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097974978] [2021-08-12 15:53:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:53:37,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:37,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097974978] [2021-08-12 15:53:37,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097974978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:37,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:37,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 15:53:37,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202030955] [2021-08-12 15:53:37,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 15:53:37,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:37,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 15:53:37,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:37,946 INFO L87 Difference]: Start difference. First operand 41121 states and 154589 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:38,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:38,904 INFO L93 Difference]: Finished difference Result 44426 states and 165028 transitions. [2021-08-12 15:53:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 15:53:38,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:53:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:39,370 INFO L225 Difference]: With dead ends: 44426 [2021-08-12 15:53:39,370 INFO L226 Difference]: Without dead ends: 32709 [2021-08-12 15:53:39,398 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:53:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32709 states. [2021-08-12 15:53:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32709 to 31900. [2021-08-12 15:53:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31900 states, 31884 states have (on average 3.609522017312759) internal successors, (115086), 31899 states have internal predecessors, (115086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31900 states to 31900 states and 115086 transitions. [2021-08-12 15:53:40,567 INFO L78 Accepts]: Start accepts. Automaton has 31900 states and 115086 transitions. Word has length 41 [2021-08-12 15:53:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:40,567 INFO L482 AbstractCegarLoop]: Abstraction has 31900 states and 115086 transitions. [2021-08-12 15:53:40,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 31900 states and 115086 transitions. [2021-08-12 15:53:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-12 15:53:40,569 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:40,569 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:40,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-12 15:53:40,569 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:40,570 INFO L82 PathProgramCache]: Analyzing trace with hash -632966192, now seen corresponding path program 1 times [2021-08-12 15:53:40,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:40,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784579672] [2021-08-12 15:53:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:40,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:40,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784579672] [2021-08-12 15:53:40,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784579672] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:53:40,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:53:40,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-12 15:53:40,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942902473] [2021-08-12 15:53:40,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-12 15:53:40,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:40,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-12 15:53:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-12 15:53:40,620 INFO L87 Difference]: Start difference. First operand 31900 states and 115086 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:41,571 INFO L93 Difference]: Finished difference Result 40761 states and 142894 transitions. [2021-08-12 15:53:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-12 15:53:41,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-08-12 15:53:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:41,855 INFO L225 Difference]: With dead ends: 40761 [2021-08-12 15:53:41,855 INFO L226 Difference]: Without dead ends: 36735 [2021-08-12 15:53:41,868 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-12 15:53:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36735 states. [2021-08-12 15:53:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36735 to 32571. [2021-08-12 15:53:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32571 states, 32555 states have (on average 3.600460758716019) internal successors, (117213), 32570 states have internal predecessors, (117213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32571 states to 32571 states and 117213 transitions. [2021-08-12 15:53:43,105 INFO L78 Accepts]: Start accepts. Automaton has 32571 states and 117213 transitions. Word has length 69 [2021-08-12 15:53:43,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:43,105 INFO L482 AbstractCegarLoop]: Abstraction has 32571 states and 117213 transitions. [2021-08-12 15:53:43,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:43,105 INFO L276 IsEmpty]: Start isEmpty. Operand 32571 states and 117213 transitions. [2021-08-12 15:53:43,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-08-12 15:53:43,108 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:43,108 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:43,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-12 15:53:43,108 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:43,109 INFO L82 PathProgramCache]: Analyzing trace with hash 414249738, now seen corresponding path program 1 times [2021-08-12 15:53:43,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:43,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623314271] [2021-08-12 15:53:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:43,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:43,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623314271] [2021-08-12 15:53:43,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623314271] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 15:53:43,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792400603] [2021-08-12 15:53:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 15:53:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:43,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-12 15:53:43,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 15:53:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:43,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792400603] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 15:53:43,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 15:53:43,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-12 15:53:43,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974423972] [2021-08-12 15:53:43,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-12 15:53:43,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:43,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-12 15:53:43,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-12 15:53:43,417 INFO L87 Difference]: Start difference. First operand 32571 states and 117213 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:44,261 INFO L93 Difference]: Finished difference Result 33398 states and 119515 transitions. [2021-08-12 15:53:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-12 15:53:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-08-12 15:53:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:44,408 INFO L225 Difference]: With dead ends: 33398 [2021-08-12 15:53:44,408 INFO L226 Difference]: Without dead ends: 33351 [2021-08-12 15:53:44,417 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-08-12 15:53:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33351 states. [2021-08-12 15:53:45,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33351 to 32561. [2021-08-12 15:53:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32561 states, 32545 states have (on average 3.6008603472115532) internal successors, (117190), 32560 states have internal predecessors, (117190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32561 states to 32561 states and 117190 transitions. [2021-08-12 15:53:45,574 INFO L78 Accepts]: Start accepts. Automaton has 32561 states and 117190 transitions. Word has length 76 [2021-08-12 15:53:45,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:45,574 INFO L482 AbstractCegarLoop]: Abstraction has 32561 states and 117190 transitions. [2021-08-12 15:53:45,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 32561 states and 117190 transitions. [2021-08-12 15:53:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-08-12 15:53:45,585 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:45,585 INFO L550 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:45,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-12 15:53:45,801 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:45,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1303723719, now seen corresponding path program 1 times [2021-08-12 15:53:45,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:45,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121807393] [2021-08-12 15:53:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-12 15:53:45,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:53:45,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121807393] [2021-08-12 15:53:45,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121807393] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 15:53:45,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792546995] [2021-08-12 15:53:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-12 15:53:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:53:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-12 15:53:45,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-12 15:53:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-12 15:53:46,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792546995] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-12 15:53:46,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-12 15:53:46,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-08-12 15:53:46,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152914222] [2021-08-12 15:53:46,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-12 15:53:46,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:53:46,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-12 15:53:46,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-08-12 15:53:46,195 INFO L87 Difference]: Start difference. First operand 32561 states and 117190 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:53:47,145 INFO L93 Difference]: Finished difference Result 35218 states and 124082 transitions. [2021-08-12 15:53:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-12 15:53:47,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-08-12 15:53:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:53:47,318 INFO L225 Difference]: With dead ends: 35218 [2021-08-12 15:53:47,318 INFO L226 Difference]: Without dead ends: 25621 [2021-08-12 15:53:47,343 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-08-12 15:53:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25621 states. [2021-08-12 15:53:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25621 to 25336. [2021-08-12 15:53:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25336 states, 25324 states have (on average 3.6222555678407833) internal successors, (91730), 25335 states have internal predecessors, (91730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25336 states to 25336 states and 91730 transitions. [2021-08-12 15:53:48,437 INFO L78 Accepts]: Start accepts. Automaton has 25336 states and 91730 transitions. Word has length 91 [2021-08-12 15:53:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:53:48,437 INFO L482 AbstractCegarLoop]: Abstraction has 25336 states and 91730 transitions. [2021-08-12 15:53:48,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:53:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 25336 states and 91730 transitions. [2021-08-12 15:53:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-08-12 15:53:48,467 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:53:48,468 INFO L550 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:53:48,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-12 15:53:48,693 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:53:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:53:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1407006812, now seen corresponding path program 1 times [2021-08-12 15:53:48,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:53:48,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094275351] [2021-08-12 15:53:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:53:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:48,719 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-12 15:53:48,736 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-12 15:53:48,754 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-12 15:53:48,754 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-12 15:53:48,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-12 15:53:48,754 WARN L235 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-12 15:53:48,754 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,768 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,769 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,770 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,771 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,772 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,773 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,773 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,773 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,773 WARN L313 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,774 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,774 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,774 WARN L313 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,774 WARN L313 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,775 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,776 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,776 WARN L313 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,776 WARN L313 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,777 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,777 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,777 WARN L313 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,777 WARN L313 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,778 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,778 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,778 WARN L313 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,778 WARN L313 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 15:53:48,783 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-08-12 15:53:48,784 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 15:53:48,787 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 15:53:48,787 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 15:53:48,787 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 15:53:48,787 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 15:53:48,787 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 15:53:48,787 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 15:53:48,787 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 15:53:48,787 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 15:53:48,789 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 116 transitions, 292 flow [2021-08-12 15:56:37,979 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:56:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:56:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:56:38,519 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:56:38,519 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:56:38,519 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:56:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:56:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash 305910707, now seen corresponding path program 1 times [2021-08-12 15:56:38,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:56:38,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872013620] [2021-08-12 15:56:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:56:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:56:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:56:38,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:56:38,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872013620] [2021-08-12 15:56:38,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872013620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:56:38,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:56:38,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 15:56:38,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510653864] [2021-08-12 15:56:38,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 15:56:38,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:56:38,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 15:56:38,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:56:38,899 INFO L87 Difference]: Start difference. First operand has 291078 states, 291012 states have (on average 4.524208623699367) internal successors, (1316599), 291077 states have internal predecessors, (1316599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:56:48,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:56:48,732 INFO L93 Difference]: Finished difference Result 574355 states and 2599476 transitions. [2021-08-12 15:56:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 15:56:48,733 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:56:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:56:52,199 INFO L225 Difference]: With dead ends: 574355 [2021-08-12 15:56:52,199 INFO L226 Difference]: Without dead ends: 236641 [2021-08-12 15:56:52,579 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 15:56:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236641 states. [2021-08-12 15:57:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236641 to 236641. [2021-08-12 15:57:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236641 states, 236608 states have (on average 4.452453002434407) internal successors, (1053486), 236640 states have internal predecessors, (1053486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:57:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236641 states to 236641 states and 1053486 transitions. [2021-08-12 15:57:08,781 INFO L78 Accepts]: Start accepts. Automaton has 236641 states and 1053486 transitions. Word has length 41 [2021-08-12 15:57:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 15:57:08,781 INFO L482 AbstractCegarLoop]: Abstraction has 236641 states and 1053486 transitions. [2021-08-12 15:57:08,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:57:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 236641 states and 1053486 transitions. [2021-08-12 15:57:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-12 15:57:08,801 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 15:57:08,801 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 15:57:08,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-12 15:57:08,801 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 15:57:08,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 15:57:08,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1025101332, now seen corresponding path program 1 times [2021-08-12 15:57:08,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 15:57:08,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617739024] [2021-08-12 15:57:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 15:57:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 15:57:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 15:57:08,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 15:57:08,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617739024] [2021-08-12 15:57:08,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617739024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 15:57:08,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 15:57:08,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 15:57:08,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193884668] [2021-08-12 15:57:08,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 15:57:08,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 15:57:08,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 15:57:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:57:08,865 INFO L87 Difference]: Start difference. First operand 236641 states and 1053486 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 15:57:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 15:57:15,625 INFO L93 Difference]: Finished difference Result 253821 states and 1121100 transitions. [2021-08-12 15:57:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 15:57:15,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-12 15:57:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 15:57:18,981 INFO L225 Difference]: With dead ends: 253821 [2021-08-12 15:57:18,981 INFO L226 Difference]: Without dead ends: 195229 [2021-08-12 15:57:19,183 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-12 15:57:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195229 states.