/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 14:17:38,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 14:17:38,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 14:17:38,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 14:17:38,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 14:17:38,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 14:17:38,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 14:17:38,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 14:17:38,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 14:17:38,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 14:17:38,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 14:17:38,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 14:17:38,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 14:17:38,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 14:17:38,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 14:17:38,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 14:17:38,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 14:17:38,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 14:17:38,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 14:17:38,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 14:17:38,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 14:17:38,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 14:17:38,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 14:17:38,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 14:17:38,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 14:17:38,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 14:17:38,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 14:17:38,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 14:17:38,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 14:17:38,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 14:17:38,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 14:17:38,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 14:17:38,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 14:17:39,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 14:17:39,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 14:17:39,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 14:17:39,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 14:17:39,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 14:17:39,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 14:17:39,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 14:17:39,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 14:17:39,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 14:17:39,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 14:17:39,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 14:17:39,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 14:17:39,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 14:17:39,071 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 14:17:39,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 14:17:39,072 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 14:17:39,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 14:17:39,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 14:17:39,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 14:17:39,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 14:17:39,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 14:17:39,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 14:17:39,075 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 14:17:39,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 14:17:39,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 14:17:39,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 14:17:39,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 14:17:39,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 14:17:39,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 14:17:39,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 14:17:39,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 14:17:39,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 14:17:39,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 14:17:39,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 14:17:39,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 14:17:39,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 14:17:39,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 14:17:39,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 14:17:39,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 14:17:39,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 14:17:39,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 14:17:39,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 14:17:39,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 14:17:39,573 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 14:17:39,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-09-16 14:17:39,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7e77021/cd7f4a62854d493687be8029f3d788a9/FLAG030ab1107 [2020-09-16 14:17:40,403 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 14:17:40,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-09-16 14:17:40,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7e77021/cd7f4a62854d493687be8029f3d788a9/FLAG030ab1107 [2020-09-16 14:17:40,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed7e77021/cd7f4a62854d493687be8029f3d788a9 [2020-09-16 14:17:40,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 14:17:40,681 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 14:17:40,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 14:17:40,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 14:17:40,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 14:17:40,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:17:40" (1/1) ... [2020-09-16 14:17:40,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1c4092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:40, skipping insertion in model container [2020-09-16 14:17:40,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:17:40" (1/1) ... [2020-09-16 14:17:40,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 14:17:40,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 14:17:41,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:17:41,454 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 14:17:41,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:17:41,645 INFO L208 MainTranslator]: Completed translation [2020-09-16 14:17:41,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41 WrapperNode [2020-09-16 14:17:41,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 14:17:41,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 14:17:41,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 14:17:41,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 14:17:41,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 14:17:41,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 14:17:41,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 14:17:41,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 14:17:41,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... [2020-09-16 14:17:41,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 14:17:41,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 14:17:41,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 14:17:41,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 14:17:41,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 14:17:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-16 14:17:41,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-16 14:17:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 14:17:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 14:17:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 14:17:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 14:17:41,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 14:17:41,848 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 14:17:42,332 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 14:17:42,333 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-16 14:17:42,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:17:42 BoogieIcfgContainer [2020-09-16 14:17:42,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 14:17:42,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 14:17:42,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 14:17:42,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 14:17:42,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 02:17:40" (1/3) ... [2020-09-16 14:17:42,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577fa8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:17:42, skipping insertion in model container [2020-09-16 14:17:42,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:17:41" (2/3) ... [2020-09-16 14:17:42,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577fa8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:17:42, skipping insertion in model container [2020-09-16 14:17:42,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:17:42" (3/3) ... [2020-09-16 14:17:42,350 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2020-09-16 14:17:42,364 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 14:17:42,365 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 14:17:42,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 14:17:42,380 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 14:17:42,406 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,407 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,408 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:42,442 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-16 14:17:42,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:17:42,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:17:42,473 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:17:42,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:17:42,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:17:42,474 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:17:42,474 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:17:42,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:17:42,494 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 32 transitions, 69 flow [2020-09-16 14:17:42,498 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-09-16 14:17:42,542 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-09-16 14:17:42,543 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 14:17:42,550 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-09-16 14:17:42,552 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-09-16 14:17:42,566 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-09-16 14:17:42,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 14:17:42,568 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-09-16 14:17:42,569 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 260 [2020-09-16 14:17:42,571 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:17:43,478 INFO L206 etLargeBlockEncoding]: Checked pairs total: 174 [2020-09-16 14:17:43,478 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2020-09-16 14:17:43,485 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-09-16 14:17:43,500 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-09-16 14:17:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-16 14:17:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-16 14:17:43,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:43,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-16 14:17:43,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:43,526 INFO L82 PathProgramCache]: Analyzing trace with hash 174998047, now seen corresponding path program 1 times [2020-09-16 14:17:43,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:43,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65681993] [2020-09-16 14:17:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:43,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65681993] [2020-09-16 14:17:43,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:43,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:17:43,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129386843] [2020-09-16 14:17:44,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:17:44,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:44,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:17:44,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:44,030 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-09-16 14:17:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:44,086 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-09-16 14:17:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:17:44,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-09-16 14:17:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:44,106 INFO L225 Difference]: With dead ends: 23 [2020-09-16 14:17:44,106 INFO L226 Difference]: Without dead ends: 23 [2020-09-16 14:17:44,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-16 14:17:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-16 14:17:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-16 14:17:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-09-16 14:17:44,167 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-09-16 14:17:44,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:44,167 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-09-16 14:17:44,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:17:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-09-16 14:17:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 14:17:44,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:44,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-16 14:17:44,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 14:17:44,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:44,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1129907960, now seen corresponding path program 1 times [2020-09-16 14:17:44,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:44,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855469750] [2020-09-16 14:17:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:44,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:44,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:44,259 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 14:17:44,259 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 14:17:44,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 14:17:44,263 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 14:17:44,263 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-16 14:17:44,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,285 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:44,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 14:17:44,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:17:44,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:17:44,294 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:17:44,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:17:44,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:17:44,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:17:44,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:17:44,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:17:44,297 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 46 transitions, 104 flow [2020-09-16 14:17:44,297 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-09-16 14:17:44,313 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-09-16 14:17:44,313 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-16 14:17:44,314 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-09-16 14:17:44,317 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-09-16 14:17:44,332 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-09-16 14:17:44,332 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-16 14:17:44,333 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-09-16 14:17:44,335 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 884 [2020-09-16 14:17:44,335 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:17:45,302 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1690 [2020-09-16 14:17:45,302 INFO L214 etLargeBlockEncoding]: Total number of compositions: 31 [2020-09-16 14:17:45,303 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 54 flow [2020-09-16 14:17:45,315 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2020-09-16 14:17:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-09-16 14:17:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 14:17:45,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:45,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:45,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:17:45,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash -918990935, now seen corresponding path program 1 times [2020-09-16 14:17:45,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:45,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528559281] [2020-09-16 14:17:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:45,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528559281] [2020-09-16 14:17:45,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:45,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:45,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709119328] [2020-09-16 14:17:45,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:17:45,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:45,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:17:45,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:45,417 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2020-09-16 14:17:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:45,502 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2020-09-16 14:17:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:17:45,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-16 14:17:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:45,513 INFO L225 Difference]: With dead ends: 251 [2020-09-16 14:17:45,514 INFO L226 Difference]: Without dead ends: 251 [2020-09-16 14:17:45,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-16 14:17:45,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-09-16 14:17:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-16 14:17:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2020-09-16 14:17:45,559 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2020-09-16 14:17:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:45,559 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2020-09-16 14:17:45,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:17:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2020-09-16 14:17:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:17:45,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:45,562 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-09-16 14:17:45,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 14:17:45,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:17:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash -684520473, now seen corresponding path program 1 times [2020-09-16 14:17:45,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:45,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43768922] [2020-09-16 14:17:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:45,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:45,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:45,622 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 14:17:45,622 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 14:17:45,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 14:17:45,625 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 14:17:45,635 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-16 14:17:45,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,658 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,677 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,678 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,679 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,679 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,680 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,685 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,688 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:45,691 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-16 14:17:45,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:17:45,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:17:45,692 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:17:45,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:17:45,692 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:17:45,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:17:45,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:17:45,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:17:45,694 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 141 flow [2020-09-16 14:17:45,695 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-09-16 14:17:45,736 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-09-16 14:17:45,736 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-16 14:17:45,738 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-09-16 14:17:45,741 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-09-16 14:17:45,757 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-09-16 14:17:45,757 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-16 14:17:45,759 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-09-16 14:17:45,762 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1872 [2020-09-16 14:17:45,763 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:17:46,886 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3466 [2020-09-16 14:17:46,887 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2020-09-16 14:17:46,888 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 27 transitions, 75 flow [2020-09-16 14:17:46,962 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2020-09-16 14:17:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2020-09-16 14:17:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 14:17:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:46,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:46,964 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:17:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:46,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1577579009, now seen corresponding path program 1 times [2020-09-16 14:17:46,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:46,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889069379] [2020-09-16 14:17:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:47,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889069379] [2020-09-16 14:17:47,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:47,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:47,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394520225] [2020-09-16 14:17:47,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:17:47,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:47,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:17:47,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:47,059 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2020-09-16 14:17:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:47,170 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2020-09-16 14:17:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:17:47,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-16 14:17:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:47,192 INFO L225 Difference]: With dead ends: 1547 [2020-09-16 14:17:47,193 INFO L226 Difference]: Without dead ends: 1547 [2020-09-16 14:17:47,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-09-16 14:17:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2020-09-16 14:17:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-09-16 14:17:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2020-09-16 14:17:47,313 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2020-09-16 14:17:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:47,314 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2020-09-16 14:17:47,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:17:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2020-09-16 14:17:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:17:47,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:47,315 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:47,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 14:17:47,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:17:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:47,316 INFO L82 PathProgramCache]: Analyzing trace with hash 70043134, now seen corresponding path program 1 times [2020-09-16 14:17:47,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:47,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683751282] [2020-09-16 14:17:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:47,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683751282] [2020-09-16 14:17:47,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:47,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:47,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009543283] [2020-09-16 14:17:47,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:17:47,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:47,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:17:47,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:47,416 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2020-09-16 14:17:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:47,542 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2020-09-16 14:17:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:17:47,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 14:17:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:47,563 INFO L225 Difference]: With dead ends: 1516 [2020-09-16 14:17:47,564 INFO L226 Difference]: Without dead ends: 1516 [2020-09-16 14:17:47,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-09-16 14:17:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2020-09-16 14:17:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-16 14:17:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2020-09-16 14:17:47,647 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2020-09-16 14:17:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:47,647 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2020-09-16 14:17:47,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:17:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2020-09-16 14:17:47,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 14:17:47,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:47,649 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:47,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 14:17:47,650 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:17:47,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:47,650 INFO L82 PathProgramCache]: Analyzing trace with hash 745225709, now seen corresponding path program 1 times [2020-09-16 14:17:47,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:47,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513452294] [2020-09-16 14:17:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 14:17:47,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513452294] [2020-09-16 14:17:47,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:47,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:47,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054980388] [2020-09-16 14:17:47,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:17:47,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:47,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:17:47,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:47,762 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2020-09-16 14:17:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:47,884 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2020-09-16 14:17:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:17:47,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 14:17:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:47,909 INFO L225 Difference]: With dead ends: 1685 [2020-09-16 14:17:47,909 INFO L226 Difference]: Without dead ends: 1685 [2020-09-16 14:17:47,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-09-16 14:17:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2020-09-16 14:17:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-09-16 14:17:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2020-09-16 14:17:48,006 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2020-09-16 14:17:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:48,008 INFO L479 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2020-09-16 14:17:48,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:17:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2020-09-16 14:17:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 14:17:48,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:48,018 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-09-16 14:17:48,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 14:17:48,018 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:17:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash 405776013, now seen corresponding path program 1 times [2020-09-16 14:17:48,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:48,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020623453] [2020-09-16 14:17:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:48,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:48,098 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:48,114 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 14:17:48,114 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 14:17:48,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 14:17:48,115 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 14:17:48,116 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-16 14:17:48,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,135 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,135 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,135 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,135 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,136 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,136 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,136 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,154 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,154 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:48,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-16 14:17:48,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:17:48,158 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:17:48,158 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:17:48,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:17:48,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:17:48,159 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:17:48,159 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:17:48,159 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:17:48,161 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 180 flow [2020-09-16 14:17:48,161 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-09-16 14:17:48,191 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-09-16 14:17:48,192 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-16 14:17:48,195 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-09-16 14:17:48,201 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-09-16 14:17:48,226 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-09-16 14:17:48,226 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-16 14:17:48,228 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-09-16 14:17:48,233 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3224 [2020-09-16 14:17:48,233 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:17:49,738 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6771 [2020-09-16 14:17:49,738 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-16 14:17:49,739 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 102 flow [2020-09-16 14:17:50,422 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2020-09-16 14:17:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2020-09-16 14:17:50,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 14:17:50,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:50,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:50,424 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1757560872, now seen corresponding path program 1 times [2020-09-16 14:17:50,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:50,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128165032] [2020-09-16 14:17:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:50,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128165032] [2020-09-16 14:17:50,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:50,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:50,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733571734] [2020-09-16 14:17:50,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:17:50,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:50,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:17:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:50,508 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2020-09-16 14:17:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:50,763 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2020-09-16 14:17:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:17:50,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-16 14:17:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:50,883 INFO L225 Difference]: With dead ends: 8945 [2020-09-16 14:17:50,883 INFO L226 Difference]: Without dead ends: 8945 [2020-09-16 14:17:50,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2020-09-16 14:17:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2020-09-16 14:17:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2020-09-16 14:17:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2020-09-16 14:17:51,469 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2020-09-16 14:17:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:51,470 INFO L479 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2020-09-16 14:17:51,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:17:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2020-09-16 14:17:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:17:51,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:51,471 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:51,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 14:17:51,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:51,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1093825439, now seen corresponding path program 1 times [2020-09-16 14:17:51,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:51,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507151916] [2020-09-16 14:17:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:51,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507151916] [2020-09-16 14:17:51,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:51,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:51,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149886012] [2020-09-16 14:17:51,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:17:51,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:17:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:51,573 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 4 states. [2020-09-16 14:17:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:52,535 INFO L93 Difference]: Finished difference Result 9334 states and 43415 transitions. [2020-09-16 14:17:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:17:52,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 14:17:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:52,619 INFO L225 Difference]: With dead ends: 9334 [2020-09-16 14:17:52,619 INFO L226 Difference]: Without dead ends: 9334 [2020-09-16 14:17:52,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2020-09-16 14:17:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 7850. [2020-09-16 14:17:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2020-09-16 14:17:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 36573 transitions. [2020-09-16 14:17:53,079 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 36573 transitions. Word has length 9 [2020-09-16 14:17:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:53,079 INFO L479 AbstractCegarLoop]: Abstraction has 7850 states and 36573 transitions. [2020-09-16 14:17:53,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:17:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 36573 transitions. [2020-09-16 14:17:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 14:17:53,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:53,080 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:53,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-16 14:17:53,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1717595244, now seen corresponding path program 1 times [2020-09-16 14:17:53,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:53,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377277347] [2020-09-16 14:17:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 14:17:53,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377277347] [2020-09-16 14:17:53,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:53,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:53,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666491171] [2020-09-16 14:17:53,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:17:53,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:53,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:17:53,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:53,154 INFO L87 Difference]: Start difference. First operand 7850 states and 36573 transitions. Second operand 5 states. [2020-09-16 14:17:53,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:53,484 INFO L93 Difference]: Finished difference Result 10343 states and 47933 transitions. [2020-09-16 14:17:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:17:53,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 14:17:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:53,564 INFO L225 Difference]: With dead ends: 10343 [2020-09-16 14:17:53,565 INFO L226 Difference]: Without dead ends: 10343 [2020-09-16 14:17:53,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2020-09-16 14:17:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 8547. [2020-09-16 14:17:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8547 states. [2020-09-16 14:17:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 39726 transitions. [2020-09-16 14:17:54,085 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 39726 transitions. Word has length 10 [2020-09-16 14:17:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:54,086 INFO L479 AbstractCegarLoop]: Abstraction has 8547 states and 39726 transitions. [2020-09-16 14:17:54,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:17:54,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 39726 transitions. [2020-09-16 14:17:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 14:17:54,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:54,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:54,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-16 14:17:54,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:54,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1341588144, now seen corresponding path program 1 times [2020-09-16 14:17:54,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:54,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344662022] [2020-09-16 14:17:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 14:17:54,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344662022] [2020-09-16 14:17:54,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:54,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:54,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871173908] [2020-09-16 14:17:54,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:17:54,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:54,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:17:54,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:54,174 INFO L87 Difference]: Start difference. First operand 8547 states and 39726 transitions. Second operand 4 states. [2020-09-16 14:17:54,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:54,589 INFO L93 Difference]: Finished difference Result 11574 states and 53865 transitions. [2020-09-16 14:17:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:17:54,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 14:17:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:54,661 INFO L225 Difference]: With dead ends: 11574 [2020-09-16 14:17:54,662 INFO L226 Difference]: Without dead ends: 11574 [2020-09-16 14:17:54,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:17:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2020-09-16 14:17:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 10068. [2020-09-16 14:17:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2020-09-16 14:17:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 46954 transitions. [2020-09-16 14:17:55,215 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 46954 transitions. Word has length 12 [2020-09-16 14:17:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:55,215 INFO L479 AbstractCegarLoop]: Abstraction has 10068 states and 46954 transitions. [2020-09-16 14:17:55,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:17:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 46954 transitions. [2020-09-16 14:17:55,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 14:17:55,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:55,217 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:55,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-16 14:17:55,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:55,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash 472658435, now seen corresponding path program 1 times [2020-09-16 14:17:55,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:55,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110551696] [2020-09-16 14:17:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:55,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110551696] [2020-09-16 14:17:55,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620036300] [2020-09-16 14:17:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 14:17:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:55,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-16 14:17:55,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 14:17:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:17:55,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 14:17:55,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-16 14:17:55,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946173535] [2020-09-16 14:17:55,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:17:55,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:55,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:17:55,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:17:55,440 INFO L87 Difference]: Start difference. First operand 10068 states and 46954 transitions. Second operand 6 states. [2020-09-16 14:17:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:55,552 INFO L93 Difference]: Finished difference Result 2132 states and 7715 transitions. [2020-09-16 14:17:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 14:17:55,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-16 14:17:55,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:55,556 INFO L225 Difference]: With dead ends: 2132 [2020-09-16 14:17:55,557 INFO L226 Difference]: Without dead ends: 2132 [2020-09-16 14:17:55,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:17:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-09-16 14:17:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1721. [2020-09-16 14:17:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-09-16 14:17:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 6117 transitions. [2020-09-16 14:17:56,291 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 6117 transitions. Word has length 13 [2020-09-16 14:17:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:56,291 INFO L479 AbstractCegarLoop]: Abstraction has 1721 states and 6117 transitions. [2020-09-16 14:17:56,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:17:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 6117 transitions. [2020-09-16 14:17:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 14:17:56,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:56,293 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:56,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-16 14:17:56,509 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:56,510 INFO L82 PathProgramCache]: Analyzing trace with hash -160310730, now seen corresponding path program 1 times [2020-09-16 14:17:56,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:56,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755457158] [2020-09-16 14:17:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:17:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-16 14:17:56,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755457158] [2020-09-16 14:17:56,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:17:56,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:17:56,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088034890] [2020-09-16 14:17:56,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:17:56,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:17:56,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:17:56,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:56,602 INFO L87 Difference]: Start difference. First operand 1721 states and 6117 transitions. Second operand 5 states. [2020-09-16 14:17:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:17:56,690 INFO L93 Difference]: Finished difference Result 2966 states and 10590 transitions. [2020-09-16 14:17:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:17:56,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-16 14:17:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:17:56,698 INFO L225 Difference]: With dead ends: 2966 [2020-09-16 14:17:56,699 INFO L226 Difference]: Without dead ends: 2966 [2020-09-16 14:17:56,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:17:56,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-09-16 14:17:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1991. [2020-09-16 14:17:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-09-16 14:17:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2020-09-16 14:17:56,776 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2020-09-16 14:17:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:17:56,776 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2020-09-16 14:17:56,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:17:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2020-09-16 14:17:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 14:17:56,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:17:56,779 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-09-16 14:17:56,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-16 14:17:56,779 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-16 14:17:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:17:56,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1231775675, now seen corresponding path program 1 times [2020-09-16 14:17:56,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:17:56,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55771374] [2020-09-16 14:17:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:17:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:56,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:17:56,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:17:56,812 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 14:17:56,813 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 14:17:56,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-16 14:17:56,814 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 14:17:56,814 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-16 14:17:56,824 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,827 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,827 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:17:56,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-16 14:17:56,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:17:56,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:17:56,857 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:17:56,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:17:56,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:17:56,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:17:56,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:17:56,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:17:56,860 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 88 transitions, 221 flow [2020-09-16 14:17:56,860 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-09-16 14:17:56,878 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-09-16 14:17:56,878 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-16 14:17:56,880 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-09-16 14:17:56,887 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-09-16 14:17:56,903 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-09-16 14:17:56,904 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-16 14:17:56,907 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-09-16 14:17:56,917 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4940 [2020-09-16 14:17:56,917 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:17:59,398 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11021 [2020-09-16 14:17:59,398 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-16 14:17:59,399 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 133 flow [2020-09-16 14:18:10,150 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2020-09-16 14:18:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2020-09-16 14:18:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 14:18:10,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:10,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:10,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:10,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1689394107, now seen corresponding path program 1 times [2020-09-16 14:18:10,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:10,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396064951] [2020-09-16 14:18:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:18:10,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396064951] [2020-09-16 14:18:10,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:18:10,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:18:10,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041875177] [2020-09-16 14:18:10,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:18:10,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:10,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:18:10,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:10,228 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2020-09-16 14:18:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:12,103 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2020-09-16 14:18:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:18:12,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-16 14:18:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:12,371 INFO L225 Difference]: With dead ends: 50507 [2020-09-16 14:18:12,371 INFO L226 Difference]: Without dead ends: 50507 [2020-09-16 14:18:12,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2020-09-16 14:18:16,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2020-09-16 14:18:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2020-09-16 14:18:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2020-09-16 14:18:17,146 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2020-09-16 14:18:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:17,146 INFO L479 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2020-09-16 14:18:17,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:18:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2020-09-16 14:18:17,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:18:17,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:17,147 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:17,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-16 14:18:17,147 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash 10078299, now seen corresponding path program 1 times [2020-09-16 14:18:17,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:17,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292978012] [2020-09-16 14:18:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:18:17,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292978012] [2020-09-16 14:18:17,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787718430] [2020-09-16 14:18:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 14:18:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:17,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-09-16 14:18:17,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 14:18:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:18:17,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 14:18:17,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-16 14:18:17,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18839368] [2020-09-16 14:18:17,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-16 14:18:17,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:17,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-16 14:18:17,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:18:17,382 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 9 states. [2020-09-16 14:18:21,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:21,248 INFO L93 Difference]: Finished difference Result 60741 states and 341022 transitions. [2020-09-16 14:18:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-16 14:18:21,249 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-09-16 14:18:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:21,569 INFO L225 Difference]: With dead ends: 60741 [2020-09-16 14:18:21,570 INFO L226 Difference]: Without dead ends: 60741 [2020-09-16 14:18:21,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-16 14:18:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60741 states. [2020-09-16 14:18:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60741 to 38665. [2020-09-16 14:18:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38665 states. [2020-09-16 14:18:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38665 states to 38665 states and 218361 transitions. [2020-09-16 14:18:24,426 INFO L78 Accepts]: Start accepts. Automaton has 38665 states and 218361 transitions. Word has length 9 [2020-09-16 14:18:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:24,427 INFO L479 AbstractCegarLoop]: Abstraction has 38665 states and 218361 transitions. [2020-09-16 14:18:24,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-16 14:18:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 38665 states and 218361 transitions. [2020-09-16 14:18:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 14:18:24,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:24,428 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:24,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-09-16 14:18:24,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:24,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:24,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1370666711, now seen corresponding path program 1 times [2020-09-16 14:18:24,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:24,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780667943] [2020-09-16 14:18:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 14:18:24,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780667943] [2020-09-16 14:18:24,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:18:24,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:18:24,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73499951] [2020-09-16 14:18:24,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:18:24,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:24,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:18:24,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:24,713 INFO L87 Difference]: Start difference. First operand 38665 states and 218361 transitions. Second operand 5 states. [2020-09-16 14:18:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:25,949 INFO L93 Difference]: Finished difference Result 51289 states and 288251 transitions. [2020-09-16 14:18:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:18:25,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 14:18:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:26,227 INFO L225 Difference]: With dead ends: 51289 [2020-09-16 14:18:26,228 INFO L226 Difference]: Without dead ends: 51289 [2020-09-16 14:18:26,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51289 states. [2020-09-16 14:18:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51289 to 41564. [2020-09-16 14:18:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41564 states. [2020-09-16 14:18:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41564 states to 41564 states and 234283 transitions. [2020-09-16 14:18:31,367 INFO L78 Accepts]: Start accepts. Automaton has 41564 states and 234283 transitions. Word has length 10 [2020-09-16 14:18:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:31,367 INFO L479 AbstractCegarLoop]: Abstraction has 41564 states and 234283 transitions. [2020-09-16 14:18:31,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:18:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 41564 states and 234283 transitions. [2020-09-16 14:18:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 14:18:31,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:31,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:31,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-16 14:18:31,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:31,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:31,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1344276643, now seen corresponding path program 1 times [2020-09-16 14:18:31,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:31,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902999326] [2020-09-16 14:18:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-16 14:18:31,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902999326] [2020-09-16 14:18:31,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:18:31,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:18:31,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216516157] [2020-09-16 14:18:31,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:18:31,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:18:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:18:31,458 INFO L87 Difference]: Start difference. First operand 41564 states and 234283 transitions. Second operand 4 states. [2020-09-16 14:18:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:32,240 INFO L93 Difference]: Finished difference Result 57674 states and 325273 transitions. [2020-09-16 14:18:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:18:32,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 14:18:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:32,555 INFO L225 Difference]: With dead ends: 57674 [2020-09-16 14:18:32,556 INFO L226 Difference]: Without dead ends: 57674 [2020-09-16 14:18:32,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:18:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57674 states. [2020-09-16 14:18:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57674 to 50562. [2020-09-16 14:18:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50562 states. [2020-09-16 14:18:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50562 states to 50562 states and 285616 transitions. [2020-09-16 14:18:38,934 INFO L78 Accepts]: Start accepts. Automaton has 50562 states and 285616 transitions. Word has length 12 [2020-09-16 14:18:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:38,935 INFO L479 AbstractCegarLoop]: Abstraction has 50562 states and 285616 transitions. [2020-09-16 14:18:38,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:18:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 50562 states and 285616 transitions. [2020-09-16 14:18:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 14:18:38,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:38,936 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:38,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-16 14:18:38,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:38,937 INFO L82 PathProgramCache]: Analyzing trace with hash 559710068, now seen corresponding path program 1 times [2020-09-16 14:18:38,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:38,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291782877] [2020-09-16 14:18:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:18:39,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291782877] [2020-09-16 14:18:39,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736420643] [2020-09-16 14:18:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 14:18:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:39,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-16 14:18:39,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 14:18:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:18:39,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 14:18:39,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-16 14:18:39,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625917846] [2020-09-16 14:18:39,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 14:18:39,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:39,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 14:18:39,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:18:39,119 INFO L87 Difference]: Start difference. First operand 50562 states and 285616 transitions. Second operand 6 states. [2020-09-16 14:18:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:39,402 INFO L93 Difference]: Finished difference Result 8161 states and 34918 transitions. [2020-09-16 14:18:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 14:18:39,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-16 14:18:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:39,458 INFO L225 Difference]: With dead ends: 8161 [2020-09-16 14:18:39,459 INFO L226 Difference]: Without dead ends: 8161 [2020-09-16 14:18:39,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-16 14:18:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2020-09-16 14:18:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 6538. [2020-09-16 14:18:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-09-16 14:18:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2020-09-16 14:18:39,886 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2020-09-16 14:18:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:39,887 INFO L479 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2020-09-16 14:18:39,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 14:18:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2020-09-16 14:18:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 14:18:39,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:39,889 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:40,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 14:18:40,103 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:40,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:40,104 INFO L82 PathProgramCache]: Analyzing trace with hash -658320024, now seen corresponding path program 1 times [2020-09-16 14:18:40,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:40,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219201466] [2020-09-16 14:18:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-16 14:18:40,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219201466] [2020-09-16 14:18:40,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:18:40,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:18:40,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692302649] [2020-09-16 14:18:40,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:18:40,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:40,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:18:40,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:40,180 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2020-09-16 14:18:40,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:40,332 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2020-09-16 14:18:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:18:40,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-16 14:18:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:40,376 INFO L225 Difference]: With dead ends: 11626 [2020-09-16 14:18:40,377 INFO L226 Difference]: Without dead ends: 11626 [2020-09-16 14:18:40,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2020-09-16 14:18:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2020-09-16 14:18:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2020-09-16 14:18:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2020-09-16 14:18:40,840 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2020-09-16 14:18:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:40,840 INFO L479 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2020-09-16 14:18:40,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:18:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2020-09-16 14:18:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 14:18:40,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:40,846 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:40,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-16 14:18:40,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1285367916, now seen corresponding path program 1 times [2020-09-16 14:18:40,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:40,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293744709] [2020-09-16 14:18:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-16 14:18:40,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293744709] [2020-09-16 14:18:40,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:18:40,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:18:40,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166817856] [2020-09-16 14:18:40,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:18:40,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:40,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:18:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:18:40,938 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2020-09-16 14:18:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:41,050 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2020-09-16 14:18:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:18:41,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-16 14:18:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:41,073 INFO L225 Difference]: With dead ends: 6970 [2020-09-16 14:18:41,074 INFO L226 Difference]: Without dead ends: 6970 [2020-09-16 14:18:41,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:18:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-09-16 14:18:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2020-09-16 14:18:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2020-09-16 14:18:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2020-09-16 14:18:41,279 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2020-09-16 14:18:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:41,279 INFO L479 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2020-09-16 14:18:41,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:18:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2020-09-16 14:18:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-16 14:18:41,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:41,282 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:41,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-16 14:18:41,282 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash 753296421, now seen corresponding path program 1 times [2020-09-16 14:18:41,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:41,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452795941] [2020-09-16 14:18:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:18:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-16 14:18:41,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452795941] [2020-09-16 14:18:41,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:18:41,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:18:41,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777419722] [2020-09-16 14:18:41,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:18:41,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:18:41,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:18:41,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:41,366 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2020-09-16 14:18:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:18:41,599 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2020-09-16 14:18:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:18:41,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-16 14:18:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:18:41,663 INFO L225 Difference]: With dead ends: 10825 [2020-09-16 14:18:41,663 INFO L226 Difference]: Without dead ends: 10825 [2020-09-16 14:18:41,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:18:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2020-09-16 14:18:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2020-09-16 14:18:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2020-09-16 14:18:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2020-09-16 14:18:42,838 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2020-09-16 14:18:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:18:42,839 INFO L479 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2020-09-16 14:18:42,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:18:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2020-09-16 14:18:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 14:18:42,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:18:42,845 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:18:42,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-16 14:18:42,846 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:18:42,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:18:42,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1848176610, now seen corresponding path program 1 times [2020-09-16 14:18:42,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:18:42,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409386492] [2020-09-16 14:18:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:18:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:18:42,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:18:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-16 14:18:42,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-16 14:18:42,881 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-16 14:18:42,882 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-16 14:18:42,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-16 14:18:42,883 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-16 14:18:42,883 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-16 14:18:42,894 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,895 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,895 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,896 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,896 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,897 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,897 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,898 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,898 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,899 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,909 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,909 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,911 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,912 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,912 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,912 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,912 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,912 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,924 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,927 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,928 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:18:42,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-16 14:18:42,936 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:18:42,937 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:18:42,937 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:18:42,937 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:18:42,937 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:18:42,937 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:18:42,937 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:18:42,937 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:18:42,939 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 264 flow [2020-09-16 14:18:42,939 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-09-16 14:18:42,969 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-09-16 14:18:42,970 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-16 14:18:42,974 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-09-16 14:18:42,986 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-09-16 14:18:43,011 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-09-16 14:18:43,011 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-16 14:18:43,014 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-09-16 14:18:43,024 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 7020 [2020-09-16 14:18:43,024 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:18:45,237 INFO L206 etLargeBlockEncoding]: Checked pairs total: 17367 [2020-09-16 14:18:45,237 INFO L214 etLargeBlockEncoding]: Total number of compositions: 72 [2020-09-16 14:18:45,239 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 166 flow [2020-09-16 14:25:26,540 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 270604 states. [2020-09-16 14:25:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 270604 states. [2020-09-16 14:25:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 14:25:26,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:25:26,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:25:26,541 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:25:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:25:26,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1745298182, now seen corresponding path program 1 times [2020-09-16 14:25:26,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:25:26,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154404073] [2020-09-16 14:25:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:25:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:25:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:25:26,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154404073] [2020-09-16 14:25:26,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:25:26,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:25:26,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982461466] [2020-09-16 14:25:26,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 14:25:26,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:25:26,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 14:25:26,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:25:26,602 INFO L87 Difference]: Start difference. First operand 270604 states. Second operand 5 states. [2020-09-16 14:25:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:25:39,555 INFO L93 Difference]: Finished difference Result 283913 states and 1878243 transitions. [2020-09-16 14:25:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 14:25:39,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-16 14:25:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:25:41,027 INFO L225 Difference]: With dead ends: 283913 [2020-09-16 14:25:41,027 INFO L226 Difference]: Without dead ends: 283913 [2020-09-16 14:25:41,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 14:26:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283913 states. [2020-09-16 14:26:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283913 to 232423. [2020-09-16 14:26:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232423 states. [2020-09-16 14:26:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232423 states to 232423 states and 1542529 transitions. [2020-09-16 14:26:40,622 INFO L78 Accepts]: Start accepts. Automaton has 232423 states and 1542529 transitions. Word has length 7 [2020-09-16 14:26:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:26:40,622 INFO L479 AbstractCegarLoop]: Abstraction has 232423 states and 1542529 transitions. [2020-09-16 14:26:40,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 14:26:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 232423 states and 1542529 transitions. [2020-09-16 14:26:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:26:40,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:26:40,623 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:26:40,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-16 14:26:40,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:26:40,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:26:40,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2100661726, now seen corresponding path program 1 times [2020-09-16 14:26:40,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:26:40,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252382805] [2020-09-16 14:26:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:26:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:26:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:26:40,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252382805] [2020-09-16 14:26:40,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:26:40,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:26:40,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017658620] [2020-09-16 14:26:40,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:26:40,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:26:40,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:26:40,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:26:40,710 INFO L87 Difference]: Start difference. First operand 232423 states and 1542529 transitions. Second operand 4 states. [2020-09-16 14:26:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:26:54,673 INFO L93 Difference]: Finished difference Result 334390 states and 2219305 transitions. [2020-09-16 14:26:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:26:54,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 14:26:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:27:06,976 INFO L225 Difference]: With dead ends: 334390 [2020-09-16 14:27:06,976 INFO L226 Difference]: Without dead ends: 334390 [2020-09-16 14:27:06,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:27:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334390 states. [2020-09-16 14:27:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334390 to 289718. [2020-09-16 14:27:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289718 states.