/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-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:44:49,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:44:49,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:44:49,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:44:49,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:44:49,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:44:49,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:44:49,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:44:49,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:44:49,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:44:49,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:44:49,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:44:49,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:44:49,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:44:49,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:44:49,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:44:49,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:44:49,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:44:49,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:44:49,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:44:49,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:44:49,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:44:49,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:44:49,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:44:49,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:44:49,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:44:49,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:44:49,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:44:49,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:44:49,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:44:49,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:44:49,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:44:49,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:44:49,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:44:49,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:44:49,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:44:49,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:44:49,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:44:49,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:44:49,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:44:49,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:44:49,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:44:49,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:44:49,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:44:49,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:44:49,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:44:49,971 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:44:49,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:44:49,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:44:49,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:44:49,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:44:49,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:44:49,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:44:49,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:44:49,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:44:49,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:44:49,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:44:49,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:44:49,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:44:49,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:44:49,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:44:49,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:44:49,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:44:49,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:44:49,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:44:49,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:44:49,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:44:49,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:44:49,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:44:49,979 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:44:49,979 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:44:49,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:44:49,979 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:44:50,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:44:50,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:44:50,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:44:50,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:44:50,302 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:44:50,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-16 13:44:50,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09ba48b4/d6fbc4a3836d4648acbbe231a2c7ddda/FLAGb344dad60 [2020-10-16 13:44:50,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:44:50,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-10-16 13:44:50,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09ba48b4/d6fbc4a3836d4648acbbe231a2c7ddda/FLAGb344dad60 [2020-10-16 13:44:51,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09ba48b4/d6fbc4a3836d4648acbbe231a2c7ddda [2020-10-16 13:44:51,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:44:51,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:44:51,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:44:51,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:44:51,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:44:51,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:51,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a6f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51, skipping insertion in model container [2020-10-16 13:44:51,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:51,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:44:51,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:44:51,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:44:51,830 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:44:51,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:44:51,957 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:44:51,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51 WrapperNode [2020-10-16 13:44:51,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:44:51,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:44:51,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:44:51,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:44:51,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:51,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:44:52,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:44:52,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:44:52,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:44:52,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... [2020-10-16 13:44:52,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:44:52,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:44:52,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:44:52,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:44:52,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 13:44:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:44:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:44:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:44:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:44:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:44:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:44:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:44:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:44:52,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:44:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:44:52,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:44:52,109 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:44:52,467 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:44:52,468 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:44:52,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:52 BoogieIcfgContainer [2020-10-16 13:44:52,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:44:52,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:44:52,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:44:52,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:44:52,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:44:51" (1/3) ... [2020-10-16 13:44:52,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575a33f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:52, skipping insertion in model container [2020-10-16 13:44:52,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:51" (2/3) ... [2020-10-16 13:44:52,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575a33f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:52, skipping insertion in model container [2020-10-16 13:44:52,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:52" (3/3) ... [2020-10-16 13:44:52,480 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-10-16 13:44:52,492 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:44:52,493 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:44:52,500 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:44:52,501 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:44:52,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,536 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,544 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,544 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,545 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,557 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,557 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,557 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,558 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,560 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,560 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:52,563 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:44:52,576 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:44:52,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:44:52,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:44:52,594 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:44:52,595 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:44:52,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:44:52,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:44:52,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:44:52,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:44:52,608 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:44:52,609 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:52,611 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:52,612 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:52,658 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:44:52,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:44:52,664 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:44:52,667 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:44:53,332 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-16 13:44:54,114 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-16 13:44:54,279 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 13:44:54,279 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 13:44:54,286 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:44:54,313 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:44:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:44:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:44:54,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:54,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:54,325 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:54,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 13:44:54,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:54,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275828719] [2020-10-16 13:44:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:54,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275828719] [2020-10-16 13:44:54,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:54,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:44:54,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1618021221] [2020-10-16 13:44:54,572 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:54,576 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:54,591 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:44:54,591 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:54,595 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:54,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:54,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:54,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:54,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:54,613 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:44:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:54,656 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 13:44:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:54,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:44:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:54,675 INFO L225 Difference]: With dead ends: 282 [2020-10-16 13:44:54,675 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 13:44:54,676 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 [2020-10-16 13:44:54,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 13:44:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 13:44:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 13:44:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 13:44:54,756 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 13:44:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:54,757 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 13:44:54,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 13:44:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:44:54,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:54,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:54,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:44:54,760 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-16 13:44:54,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:54,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808562905] [2020-10-16 13:44:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:54,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808562905] [2020-10-16 13:44:54,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:54,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:54,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1989729965] [2020-10-16 13:44:54,882 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:54,883 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:54,885 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 13:44:54,886 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:54,914 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:54,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:54,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:54,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:54,917 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-16 13:44:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:54,938 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-16 13:44:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:54,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:44:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:54,942 INFO L225 Difference]: With dead ends: 202 [2020-10-16 13:44:54,942 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 13:44:54,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 13:44:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 13:44:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 13:44:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 13:44:54,961 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-16 13:44:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:54,961 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 13:44:54,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 13:44:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:44:54,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:54,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:54,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:44:54,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:54,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:54,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-16 13:44:54,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:54,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877646296] [2020-10-16 13:44:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877646296] [2020-10-16 13:44:55,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:44:55,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [406113090] [2020-10-16 13:44:55,009 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,010 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,012 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-16 13:44:55,012 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,048 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:55,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:55,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,050 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 13:44:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,058 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-16 13:44:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:55,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 13:44:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,061 INFO L225 Difference]: With dead ends: 194 [2020-10-16 13:44:55,061 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 13:44:55,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 13:44:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-16 13:44:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-16 13:44:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-16 13:44:55,074 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-16 13:44:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,075 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-16 13:44:55,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-16 13:44:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:44:55,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:44:55,077 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-16 13:44:55,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017405547] [2020-10-16 13:44:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017405547] [2020-10-16 13:44:55,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:55,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [56297569] [2020-10-16 13:44:55,145 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,149 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-16 13:44:55,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,168 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:55,197 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:55,222 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:55,242 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2596#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:44:55,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:44:55,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:44:55,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:55,243 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-10-16 13:44:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,307 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-10-16 13:44:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:44:55,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:44:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,309 INFO L225 Difference]: With dead ends: 187 [2020-10-16 13:44:55,309 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 13:44:55,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:44:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 13:44:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-16 13:44:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-16 13:44:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-16 13:44:55,317 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 11 [2020-10-16 13:44:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,317 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-16 13:44:55,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:44:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-16 13:44:55,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:44:55,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:44:55,320 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-16 13:44:55,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112842429] [2020-10-16 13:44:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112842429] [2020-10-16 13:44:55,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:44:55,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1291071550] [2020-10-16 13:44:55,386 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,392 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,395 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 13:44:55,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,428 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:44:55,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:44:55,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:44:55,430 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-16 13:44:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,496 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-16 13:44:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:44:55,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 13:44:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,498 INFO L225 Difference]: With dead ends: 118 [2020-10-16 13:44:55,498 INFO L226 Difference]: Without dead ends: 108 [2020-10-16 13:44:55,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:44:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-16 13:44:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-16 13:44:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-16 13:44:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-16 13:44:55,504 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-16 13:44:55,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,505 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-16 13:44:55,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:44:55,505 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-16 13:44:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:55,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:44:55,507 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-16 13:44:55,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238252484] [2020-10-16 13:44:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238252484] [2020-10-16 13:44:55,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:55,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1057211596] [2020-10-16 13:44:55,552 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,554 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,561 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-10-16 13:44:55,562 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,656 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:55,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:55,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:55,658 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-16 13:44:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,672 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-16 13:44:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:55,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,673 INFO L225 Difference]: With dead ends: 133 [2020-10-16 13:44:55,673 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 13:44:55,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 13:44:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 13:44:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 13:44:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-16 13:44:55,677 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-16 13:44:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,678 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-16 13:44:55,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-16 13:44:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:55,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:44:55,679 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-16 13:44:55,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266940720] [2020-10-16 13:44:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266940720] [2020-10-16 13:44:55,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:55,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [72161906] [2020-10-16 13:44:55,738 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,740 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,745 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-10-16 13:44:55,746 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,772 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:55,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:55,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:55,773 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-16 13:44:55,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,795 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-16 13:44:55,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:55,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:55,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,796 INFO L225 Difference]: With dead ends: 63 [2020-10-16 13:44:55,797 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 13:44:55,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 13:44:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 13:44:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 13:44:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-16 13:44:55,799 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-16 13:44:55,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,800 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-16 13:44:55,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-16 13:44:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:55,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:44:55,801 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-16 13:44:55,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751998974] [2020-10-16 13:44:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751998974] [2020-10-16 13:44:55,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:55,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [200304746] [2020-10-16 13:44:55,841 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,843 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,847 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-16 13:44:55,847 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,855 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:55,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:55,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:55,856 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-16 13:44:55,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,874 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-16 13:44:55,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:44:55,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:55,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,875 INFO L225 Difference]: With dead ends: 56 [2020-10-16 13:44:55,875 INFO L226 Difference]: Without dead ends: 35 [2020-10-16 13:44:55,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-16 13:44:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-16 13:44:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-16 13:44:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-16 13:44:55,878 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-16 13:44:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,878 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-16 13:44:55,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-16 13:44:55,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:55,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:55,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:55,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:44:55,879 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:55,880 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-16 13:44:55,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:55,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2528705] [2020-10-16 13:44:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:55,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2528705] [2020-10-16 13:44:55,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:55,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:55,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1960331074] [2020-10-16 13:44:55,917 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:55,919 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:55,924 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-16 13:44:55,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:55,929 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:55,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:55,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:55,931 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-16 13:44:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:55,946 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-16 13:44:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:55,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:55,947 INFO L225 Difference]: With dead ends: 34 [2020-10-16 13:44:55,947 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:44:55,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:44:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:44:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:44:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:44:55,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:44:55,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:55,949 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:44:55,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:44:55,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:44:55,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:44:55,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:44:55 BasicIcfg [2020-10-16 13:44:55,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:44:55,957 INFO L168 Benchmark]: Toolchain (without parser) took 4657.31 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 100.5 MB in the beginning and 130.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:55,957 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:44:55,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.23 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 158.0 MB in the end (delta: -57.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:55,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 201.3 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:55,960 INFO L168 Benchmark]: Boogie Preprocessor took 27.08 ms. Allocated memory is still 201.3 MB. Free memory was 156.0 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:55,961 INFO L168 Benchmark]: RCFGBuilder took 434.08 ms. Allocated memory is still 201.3 MB. Free memory was 154.0 MB in the beginning and 132.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:55,962 INFO L168 Benchmark]: TraceAbstraction took 3482.26 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 131.6 MB in the beginning and 130.8 MB in the end (delta: 827.2 kB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:55,966 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.23 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 158.0 MB in the end (delta: -57.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 201.3 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.08 ms. Allocated memory is still 201.3 MB. Free memory was 156.0 MB in the beginning and 154.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.08 ms. Allocated memory is still 201.3 MB. Free memory was 154.0 MB in the beginning and 132.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3482.26 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 131.6 MB in the beginning and 130.8 MB in the end (delta: 827.2 kB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 673 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - PositiveResult [Line: 7]: 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 186 SDtfs, 119 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...