/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:06:20,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:06:20,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:06:20,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:06:20,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:06:20,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:06:20,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:06:20,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:06:20,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:06:20,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:06:20,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:06:20,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:06:20,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:06:20,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:06:20,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:06:20,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:06:20,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:06:20,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:06:20,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:06:20,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:06:20,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:06:20,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:06:20,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:06:20,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:06:20,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:06:20,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:06:20,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:06:20,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:06:20,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:06:20,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:06:20,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:06:20,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:06:20,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:06:20,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:06:20,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:06:20,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:06:20,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:06:20,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:06:20,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:06:20,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:06:20,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:06:20,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:06:20,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:06:20,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:06:20,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:06:20,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:06:20,745 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:06:20,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:06:20,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:06:20,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:06:20,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:06:20,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:06:20,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:06:20,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:06:20,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:06:20,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:06:20,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:06:20,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:06:20,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:06:20,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:06:20,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:06:20,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:06:20,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:06:20,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:06:20,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:06:20,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:06:20,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:06:20,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:06:20,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:06:20,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:06:20,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:06:21,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:06:21,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:06:21,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:06:21,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:06:21,127 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:06:21,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-21 23:06:21,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcb04c2a/2c5f64d0facf4120949a0eea993d4871/FLAG57c210e6b [2020-10-21 23:06:21,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:06:21,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-21 23:06:21,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcb04c2a/2c5f64d0facf4120949a0eea993d4871/FLAG57c210e6b [2020-10-21 23:06:22,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcb04c2a/2c5f64d0facf4120949a0eea993d4871 [2020-10-21 23:06:22,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:06:22,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:06:22,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:06:22,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:06:22,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:06:22,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7803fc12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22, skipping insertion in model container [2020-10-21 23:06:22,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:06:22,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:06:22,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:06:22,586 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:06:22,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:06:22,758 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:06:22,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22 WrapperNode [2020-10-21 23:06:22,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:06:22,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:06:22,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:06:22,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:06:22,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:06:22,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:06:22,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:06:22,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:06:22,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... [2020-10-21 23:06:22,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:06:22,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:06:22,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:06:22,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:06:22,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:06:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:06:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:06:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:06:22,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:06:22,939 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 23:06:22,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 23:06:22,940 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 23:06:22,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 23:06:22,940 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 23:06:22,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 23:06:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-21 23:06:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-21 23:06:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:06:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:06:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:06:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:06:22,945 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:06:23,326 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:06:23,326 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:06:23,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:06:23 BoogieIcfgContainer [2020-10-21 23:06:23,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:06:23,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:06:23,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:06:23,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:06:23,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:06:22" (1/3) ... [2020-10-21 23:06:23,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5a4123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:06:23, skipping insertion in model container [2020-10-21 23:06:23,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:06:22" (2/3) ... [2020-10-21 23:06:23,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5a4123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:06:23, skipping insertion in model container [2020-10-21 23:06:23,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:06:23" (3/3) ... [2020-10-21 23:06:23,339 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-21 23:06:23,351 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:06:23,352 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:06:23,359 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:06:23,360 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:06:23,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,398 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,399 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,402 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,402 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,402 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,402 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,403 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,403 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,413 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,413 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,430 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,431 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,431 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,431 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,443 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,444 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,444 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,454 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,454 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:06:23,460 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:06:23,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-21 23:06:23,498 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:06:23,498 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:06:23,498 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:06:23,499 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:06:23,499 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:06:23,499 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:06:23,499 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:06:23,499 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:06:23,513 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:06:23,514 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-21 23:06:23,516 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-21 23:06:23,518 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-10-21 23:06:23,568 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-10-21 23:06:23,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:06:23,574 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-10-21 23:06:23,579 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-10-21 23:06:25,412 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-21 23:06:25,639 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-10-21 23:06:25,639 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-10-21 23:06:25,646 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-10-21 23:06:25,703 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-21 23:06:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-21 23:06:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 23:06:25,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:25,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:25,717 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:25,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:25,723 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-10-21 23:06:25,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:25,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599286910] [2020-10-21 23:06:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:25,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599286910] [2020-10-21 23:06:25,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:25,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:06:25,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698247224] [2020-10-21 23:06:25,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:25,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:26,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:26,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,022 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-21 23:06:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:26,133 INFO L93 Difference]: Finished difference Result 682 states and 2336 transitions. [2020-10-21 23:06:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:26,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-21 23:06:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:26,158 INFO L225 Difference]: With dead ends: 682 [2020-10-21 23:06:26,159 INFO L226 Difference]: Without dead ends: 538 [2020-10-21 23:06:26,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-21 23:06:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-10-21 23:06:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-21 23:06:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1784 transitions. [2020-10-21 23:06:26,256 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1784 transitions. Word has length 10 [2020-10-21 23:06:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:26,257 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1784 transitions. [2020-10-21 23:06:26,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1784 transitions. [2020-10-21 23:06:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:06:26,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:26,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:26,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:06:26,261 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1503123814, now seen corresponding path program 1 times [2020-10-21 23:06:26,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:26,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976943558] [2020-10-21 23:06:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:26,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976943558] [2020-10-21 23:06:26,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:26,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:06:26,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549536037] [2020-10-21 23:06:26,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:26,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:26,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:26,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,374 INFO L87 Difference]: Start difference. First operand 538 states and 1784 transitions. Second operand 3 states. [2020-10-21 23:06:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:26,390 INFO L93 Difference]: Finished difference Result 508 states and 1665 transitions. [2020-10-21 23:06:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:26,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 23:06:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:26,397 INFO L225 Difference]: With dead ends: 508 [2020-10-21 23:06:26,397 INFO L226 Difference]: Without dead ends: 508 [2020-10-21 23:06:26,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-21 23:06:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-21 23:06:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-21 23:06:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1665 transitions. [2020-10-21 23:06:26,429 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1665 transitions. Word has length 11 [2020-10-21 23:06:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:26,429 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1665 transitions. [2020-10-21 23:06:26,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1665 transitions. [2020-10-21 23:06:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:06:26,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:26,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:26,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:06:26,433 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1088809907, now seen corresponding path program 1 times [2020-10-21 23:06:26,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:26,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391844063] [2020-10-21 23:06:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:26,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391844063] [2020-10-21 23:06:26,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:26,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:26,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761105726] [2020-10-21 23:06:26,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:26,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:26,504 INFO L87 Difference]: Start difference. First operand 508 states and 1665 transitions. Second operand 4 states. [2020-10-21 23:06:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:26,549 INFO L93 Difference]: Finished difference Result 748 states and 2407 transitions. [2020-10-21 23:06:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:06:26,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-21 23:06:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:26,555 INFO L225 Difference]: With dead ends: 748 [2020-10-21 23:06:26,555 INFO L226 Difference]: Without dead ends: 460 [2020-10-21 23:06:26,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:06:26,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-21 23:06:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-10-21 23:06:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-21 23:06:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1467 transitions. [2020-10-21 23:06:26,575 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1467 transitions. Word has length 12 [2020-10-21 23:06:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:26,576 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 1467 transitions. [2020-10-21 23:06:26,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1467 transitions. [2020-10-21 23:06:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:06:26,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:26,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:26,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:06:26,579 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash -647802977, now seen corresponding path program 2 times [2020-10-21 23:06:26,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:26,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126365473] [2020-10-21 23:06:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:26,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126365473] [2020-10-21 23:06:26,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:26,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:06:26,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573137133] [2020-10-21 23:06:26,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:26,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:26,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:26,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,623 INFO L87 Difference]: Start difference. First operand 460 states and 1467 transitions. Second operand 3 states. [2020-10-21 23:06:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:26,635 INFO L93 Difference]: Finished difference Result 442 states and 1398 transitions. [2020-10-21 23:06:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:26,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-21 23:06:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:26,639 INFO L225 Difference]: With dead ends: 442 [2020-10-21 23:06:26,640 INFO L226 Difference]: Without dead ends: 442 [2020-10-21 23:06:26,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-21 23:06:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-10-21 23:06:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-21 23:06:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1398 transitions. [2020-10-21 23:06:26,656 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1398 transitions. Word has length 12 [2020-10-21 23:06:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:26,657 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1398 transitions. [2020-10-21 23:06:26,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1398 transitions. [2020-10-21 23:06:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:06:26,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:26,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:26,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:06:26,659 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:26,660 INFO L82 PathProgramCache]: Analyzing trace with hash -912860165, now seen corresponding path program 1 times [2020-10-21 23:06:26,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:26,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528121184] [2020-10-21 23:06:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:26,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528121184] [2020-10-21 23:06:26,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:26,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:26,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158068957] [2020-10-21 23:06:26,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:26,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:26,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:26,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,700 INFO L87 Difference]: Start difference. First operand 442 states and 1398 transitions. Second operand 3 states. [2020-10-21 23:06:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:26,719 INFO L93 Difference]: Finished difference Result 596 states and 1797 transitions. [2020-10-21 23:06:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:26,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-21 23:06:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:26,724 INFO L225 Difference]: With dead ends: 596 [2020-10-21 23:06:26,724 INFO L226 Difference]: Without dead ends: 460 [2020-10-21 23:06:26,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-21 23:06:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 424. [2020-10-21 23:06:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-21 23:06:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1261 transitions. [2020-10-21 23:06:26,740 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1261 transitions. Word has length 13 [2020-10-21 23:06:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:26,740 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 1261 transitions. [2020-10-21 23:06:26,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1261 transitions. [2020-10-21 23:06:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:06:26,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:26,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:26,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:06:26,743 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:26,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1787336884, now seen corresponding path program 1 times [2020-10-21 23:06:26,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:26,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513936583] [2020-10-21 23:06:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:26,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513936583] [2020-10-21 23:06:26,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:26,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:26,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147645846] [2020-10-21 23:06:26,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:26,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:26,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:26,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:26,790 INFO L87 Difference]: Start difference. First operand 424 states and 1261 transitions. Second operand 4 states. [2020-10-21 23:06:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:26,813 INFO L93 Difference]: Finished difference Result 566 states and 1628 transitions. [2020-10-21 23:06:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:06:26,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-21 23:06:26,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:26,816 INFO L225 Difference]: With dead ends: 566 [2020-10-21 23:06:26,816 INFO L226 Difference]: Without dead ends: 278 [2020-10-21 23:06:26,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:06:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-21 23:06:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-10-21 23:06:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-21 23:06:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 791 transitions. [2020-10-21 23:06:26,826 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 791 transitions. Word has length 13 [2020-10-21 23:06:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:26,827 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 791 transitions. [2020-10-21 23:06:26,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 791 transitions. [2020-10-21 23:06:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 23:06:26,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:26,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:26,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:06:26,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:26,829 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 1 times [2020-10-21 23:06:26,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:26,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599861466] [2020-10-21 23:06:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:26,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599861466] [2020-10-21 23:06:26,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:26,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:26,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492143321] [2020-10-21 23:06:26,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:26,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:26,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:26,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:26,895 INFO L87 Difference]: Start difference. First operand 278 states and 791 transitions. Second operand 4 states. [2020-10-21 23:06:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:26,961 INFO L93 Difference]: Finished difference Result 349 states and 923 transitions. [2020-10-21 23:06:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:06:26,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-21 23:06:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:26,963 INFO L225 Difference]: With dead ends: 349 [2020-10-21 23:06:26,963 INFO L226 Difference]: Without dead ends: 252 [2020-10-21 23:06:26,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:06:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-21 23:06:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-21 23:06:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-21 23:06:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 674 transitions. [2020-10-21 23:06:26,973 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 674 transitions. Word has length 14 [2020-10-21 23:06:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:26,973 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 674 transitions. [2020-10-21 23:06:26,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 674 transitions. [2020-10-21 23:06:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:06:26,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:26,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:26,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:06:26,975 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:26,975 INFO L82 PathProgramCache]: Analyzing trace with hash 243922642, now seen corresponding path program 1 times [2020-10-21 23:06:26,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:26,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939174044] [2020-10-21 23:06:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:27,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939174044] [2020-10-21 23:06:27,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:27,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:06:27,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465208699] [2020-10-21 23:06:27,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:06:27,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:06:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:06:27,031 INFO L87 Difference]: Start difference. First operand 252 states and 674 transitions. Second operand 5 states. [2020-10-21 23:06:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:27,086 INFO L93 Difference]: Finished difference Result 273 states and 668 transitions. [2020-10-21 23:06:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:06:27,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-21 23:06:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:27,088 INFO L225 Difference]: With dead ends: 273 [2020-10-21 23:06:27,088 INFO L226 Difference]: Without dead ends: 195 [2020-10-21 23:06:27,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:06:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-21 23:06:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-10-21 23:06:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-21 23:06:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 465 transitions. [2020-10-21 23:06:27,095 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 465 transitions. Word has length 15 [2020-10-21 23:06:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:27,095 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 465 transitions. [2020-10-21 23:06:27,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:06:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 465 transitions. [2020-10-21 23:06:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-21 23:06:27,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:27,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:27,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:06:27,097 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-10-21 23:06:27,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:27,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054175423] [2020-10-21 23:06:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:27,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054175423] [2020-10-21 23:06:27,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:27,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:06:27,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973290857] [2020-10-21 23:06:27,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:06:27,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:27,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:06:27,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:06:27,156 INFO L87 Difference]: Start difference. First operand 195 states and 465 transitions. Second operand 6 states. [2020-10-21 23:06:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:27,215 INFO L93 Difference]: Finished difference Result 189 states and 428 transitions. [2020-10-21 23:06:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 23:06:27,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-21 23:06:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:27,217 INFO L225 Difference]: With dead ends: 189 [2020-10-21 23:06:27,217 INFO L226 Difference]: Without dead ends: 150 [2020-10-21 23:06:27,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:06:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-21 23:06:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-21 23:06:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-21 23:06:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-10-21 23:06:27,223 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 16 [2020-10-21 23:06:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:27,223 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-10-21 23:06:27,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:06:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-10-21 23:06:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 23:06:27,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:27,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:27,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:06:27,225 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:27,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1569359463, now seen corresponding path program 1 times [2020-10-21 23:06:27,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:27,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782386596] [2020-10-21 23:06:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:27,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782386596] [2020-10-21 23:06:27,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:27,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:06:27,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321761807] [2020-10-21 23:06:27,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:06:27,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:27,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:06:27,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:06:27,260 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 4 states. [2020-10-21 23:06:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:27,279 INFO L93 Difference]: Finished difference Result 182 states and 403 transitions. [2020-10-21 23:06:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:06:27,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-21 23:06:27,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:27,281 INFO L225 Difference]: With dead ends: 182 [2020-10-21 23:06:27,281 INFO L226 Difference]: Without dead ends: 139 [2020-10-21 23:06:27,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:06:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-21 23:06:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-21 23:06:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-21 23:06:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-10-21 23:06:27,286 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 18 [2020-10-21 23:06:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:27,286 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-10-21 23:06:27,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:06:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-10-21 23:06:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 23:06:27,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:27,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:27,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 23:06:27,288 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:27,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 2 times [2020-10-21 23:06:27,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:27,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363041568] [2020-10-21 23:06:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:27,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363041568] [2020-10-21 23:06:27,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:27,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 23:06:27,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511615737] [2020-10-21 23:06:27,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 23:06:27,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:27,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 23:06:27,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:06:27,354 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 7 states. [2020-10-21 23:06:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:27,416 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-10-21 23:06:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 23:06:27,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-21 23:06:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:27,417 INFO L225 Difference]: With dead ends: 132 [2020-10-21 23:06:27,417 INFO L226 Difference]: Without dead ends: 51 [2020-10-21 23:06:27,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-21 23:06:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-21 23:06:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-21 23:06:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-21 23:06:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-21 23:06:27,420 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-10-21 23:06:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:27,421 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-21 23:06:27,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 23:06:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-21 23:06:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 23:06:27,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:06:27,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:06:27,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-21 23:06:27,422 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:06:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:06:27,423 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-10-21 23:06:27,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:06:27,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675087656] [2020-10-21 23:06:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:06:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:06:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:06:27,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675087656] [2020-10-21 23:06:27,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:06:27,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:06:27,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746333566] [2020-10-21 23:06:27,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:06:27,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:06:27,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:06:27,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:27,452 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-10-21 23:06:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:06:27,458 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-21 23:06:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:06:27,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-21 23:06:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:06:27,459 INFO L225 Difference]: With dead ends: 50 [2020-10-21 23:06:27,459 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:06:27,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:06:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:06:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:06:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:06:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:06:27,460 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-21 23:06:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:06:27,461 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:06:27,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:06:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:06:27,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:06:27,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-21 23:06:27,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:06:27 BasicIcfg [2020-10-21 23:06:27,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:06:27,467 INFO L168 Benchmark]: Toolchain (without parser) took 5436.46 ms. Allocated memory was 145.8 MB in the beginning and 283.1 MB in the end (delta: 137.4 MB). Free memory was 100.9 MB in the beginning and 159.1 MB in the end (delta: -58.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:27,468 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 23:06:27,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.26 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 156.3 MB in the end (delta: -56.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:27,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.93 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 154.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:27,470 INFO L168 Benchmark]: Boogie Preprocessor took 35.23 ms. Allocated memory is still 202.9 MB. Free memory was 154.2 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:27,471 INFO L168 Benchmark]: RCFGBuilder took 469.25 ms. Allocated memory is still 202.9 MB. Free memory was 152.8 MB in the beginning and 126.7 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:27,472 INFO L168 Benchmark]: TraceAbstraction took 4134.11 ms. Allocated memory was 202.9 MB in the beginning and 283.1 MB in the end (delta: 80.2 MB). Free memory was 126.0 MB in the beginning and 159.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:06:27,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.26 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 156.3 MB in the end (delta: -56.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.93 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 154.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.23 ms. Allocated memory is still 202.9 MB. Free memory was 154.2 MB in the beginning and 152.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.25 ms. Allocated memory is still 202.9 MB. Free memory was 152.8 MB in the beginning and 126.7 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4134.11 ms. Allocated memory was 202.9 MB in the beginning and 283.1 MB in the end (delta: 80.2 MB). Free memory was 126.0 MB in the beginning and 159.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1132 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 261 SDtfs, 226 SDslu, 335 SDs, 0 SdLazy, 194 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 6260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...