/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/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:39:51,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:39:51,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:39:51,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:39:51,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:39:51,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:39:51,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:39:51,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:39:51,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:39:51,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:39:52,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:39:52,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:39:52,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:39:52,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:39:52,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:39:52,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:39:52,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:39:52,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:39:52,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:39:52,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:39:52,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:39:52,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:39:52,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:39:52,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:39:52,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:39:52,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:39:52,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:39:52,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:39:52,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:39:52,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:39:52,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:39:52,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:39:52,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:39:52,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:39:52,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:39:52,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:39:52,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:39:52,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:39:52,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:39:52,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:39:52,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:39:52,042 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 13:39:52,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:39:52,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:39:52,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:39:52,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:39:52,091 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:39:52,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:39:52,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:39:52,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:39:52,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:39:52,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:39:52,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:39:52,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:39:52,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:39:52,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:39:52,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:39:52,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:39:52,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:39:52,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:39:52,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:39:52,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:39:52,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:39:52,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:39:52,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:39:52,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:39:52,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:39:52,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:39:52,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:39:52,097 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:39:52,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:39:52,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:39:52,097 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:39:52,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:39:52,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:39:52,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:39:52,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:39:52,386 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:39:52,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-16 13:39:52,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c30dae4f/bbadeb2e66c24f9b833f34deb5925ceb/FLAG45704a4ae [2020-10-16 13:39:52,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:39:52,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-16 13:39:53,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c30dae4f/bbadeb2e66c24f9b833f34deb5925ceb/FLAG45704a4ae [2020-10-16 13:39:53,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c30dae4f/bbadeb2e66c24f9b833f34deb5925ceb [2020-10-16 13:39:53,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:39:53,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:39:53,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:53,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:39:53,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:39:53,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:53" (1/1) ... [2020-10-16 13:39:53,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93fe9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:53, skipping insertion in model container [2020-10-16 13:39:53,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:53" (1/1) ... [2020-10-16 13:39:53,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:39:53,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:39:53,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:53,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:39:53,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:54,033 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:39:54,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54 WrapperNode [2020-10-16 13:39:54,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:54,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:54,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:39:54,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:39:54,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:54,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:39:54,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:39:54,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:39:54,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:39:54,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:39:54,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:39:54,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:39:54,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (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 13:39:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:39:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:39:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:39:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:39:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:39:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:39:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:39:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:39:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:39:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:39:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 13:39:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 13:39:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:39:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:39:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:39:54,188 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 13:39:54,595 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:39:54,595 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:39:54,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:54 BoogieIcfgContainer [2020-10-16 13:39:54,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:39:54,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:39:54,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:39:54,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:39:54,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:53" (1/3) ... [2020-10-16 13:39:54,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581e42ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:54, skipping insertion in model container [2020-10-16 13:39:54,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (2/3) ... [2020-10-16 13:39:54,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581e42ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:54, skipping insertion in model container [2020-10-16 13:39:54,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:54" (3/3) ... [2020-10-16 13:39:54,607 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-10-16 13:39:54,619 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:39:54,620 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:39:54,627 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:39:54,628 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:39:54,656 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,656 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,658 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,663 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,663 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,663 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,664 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,667 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,668 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,668 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,668 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,682 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,686 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:39:54,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 13:39:54,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:39:54,722 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:39:54,723 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:39:54,723 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:39:54,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:39:54,723 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:39:54,723 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:39:54,724 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:39:54,737 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:39:54,738 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:54,741 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:54,743 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:54,792 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 13:39:54,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:39:54,798 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 13:39:54,801 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-16 13:39:56,080 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-16 13:39:56,080 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 13:39:56,087 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-16 13:39:56,147 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-16 13:39:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-16 13:39:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:39:56,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:56,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:56,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-16 13:39:56,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:56,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049112126] [2020-10-16 13:39:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:56,360 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 13:39:56,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049112126] [2020-10-16 13:39:56,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:56,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:56,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [544299312] [2020-10-16 13:39:56,364 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:56,367 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:56,382 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 13:39:56,382 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:56,387 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:56,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:39:56,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:39:56,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:39:56,402 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-16 13:39:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:56,440 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-16 13:39:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:39:56,442 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 13:39:56,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:56,468 INFO L225 Difference]: With dead ends: 850 [2020-10-16 13:39:56,469 INFO L226 Difference]: Without dead ends: 706 [2020-10-16 13:39:56,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:39:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-16 13:39:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-16 13:39:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-16 13:39:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-16 13:39:56,595 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-16 13:39:56,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:56,597 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-16 13:39:56,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:39:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-16 13:39:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:39:56,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:56,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:56,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:39:56,601 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-16 13:39:56,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:56,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645777710] [2020-10-16 13:39:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:56,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645777710] [2020-10-16 13:39:56,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:56,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:56,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1342700559] [2020-10-16 13:39:56,758 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:56,759 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:56,762 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 13:39:56,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:56,766 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:56,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:56,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:56,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:56,770 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-16 13:39:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:56,851 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-16 13:39:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:56,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:39:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:56,861 INFO L225 Difference]: With dead ends: 802 [2020-10-16 13:39:56,861 INFO L226 Difference]: Without dead ends: 658 [2020-10-16 13:39:56,862 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 [2020-10-16 13:39:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-16 13:39:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-16 13:39:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-16 13:39:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-16 13:39:56,911 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-16 13:39:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:56,911 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-16 13:39:56,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-16 13:39:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:39:56,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:56,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:56,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:39:56,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-10-16 13:39:56,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:56,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245877478] [2020-10-16 13:39:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:56,983 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 13:39:56,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245877478] [2020-10-16 13:39:56,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:56,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:56,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [749972782] [2020-10-16 13:39:56,984 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:56,985 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:56,987 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-10-16 13:39:56,988 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:56,994 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:56,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:56,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:56,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:56,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:56,996 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-16 13:39:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,033 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-10-16 13:39:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:39:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,039 INFO L225 Difference]: With dead ends: 738 [2020-10-16 13:39:57,039 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 13:39:57,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 13:39:57,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 13:39:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-10-16 13:39:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-16 13:39:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-10-16 13:39:57,085 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-10-16 13:39:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,086 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-10-16 13:39:57,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-10-16 13:39:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:39:57,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:39:57,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,089 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-10-16 13:39:57,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484164201] [2020-10-16 13:39:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,146 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 13:39:57,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484164201] [2020-10-16 13:39:57,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:57,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1483674121] [2020-10-16 13:39:57,148 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,149 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,152 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 13:39:57,152 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,200 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:57,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:57,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:57,202 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-10-16 13:39:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,228 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-10-16 13:39:57,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:39:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,234 INFO L225 Difference]: With dead ends: 658 [2020-10-16 13:39:57,234 INFO L226 Difference]: Without dead ends: 578 [2020-10-16 13:39:57,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 13:39:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-16 13:39:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-16 13:39:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-16 13:39:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-16 13:39:57,257 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-16 13:39:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,257 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-16 13:39:57,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-16 13:39:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:57,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:39:57,260 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-16 13:39:57,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707005438] [2020-10-16 13:39:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,337 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 13:39:57,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707005438] [2020-10-16 13:39:57,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:57,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2049889144] [2020-10-16 13:39:57,339 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,340 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,344 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 43 transitions. [2020-10-16 13:39:57,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,390 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:57,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:57,393 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-16 13:39:57,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,439 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-16 13:39:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:39:57,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,445 INFO L225 Difference]: With dead ends: 814 [2020-10-16 13:39:57,445 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 13:39:57,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 13:39:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 13:39:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-16 13:39:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-16 13:39:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-16 13:39:57,467 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-16 13:39:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,468 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-16 13:39:57,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-16 13:39:57,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:57,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:39:57,470 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-16 13:39:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480453475] [2020-10-16 13:39:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,522 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 13:39:57,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480453475] [2020-10-16 13:39:57,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:57,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [895504931] [2020-10-16 13:39:57,523 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,525 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,529 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-10-16 13:39:57,529 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,581 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:57,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:57,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:57,583 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-10-16 13:39:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,626 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-10-16 13:39:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 13:39:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,630 INFO L225 Difference]: With dead ends: 838 [2020-10-16 13:39:57,631 INFO L226 Difference]: Without dead ends: 490 [2020-10-16 13:39:57,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-16 13:39:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-10-16 13:39:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-16 13:39:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-10-16 13:39:57,652 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-10-16 13:39:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,653 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-10-16 13:39:57,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-10-16 13:39:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:57,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:39:57,655 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-10-16 13:39:57,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694883681] [2020-10-16 13:39:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,728 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 13:39:57,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694883681] [2020-10-16 13:39:57,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:57,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [700321479] [2020-10-16 13:39:57,730 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,732 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,737 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 13:39:57,738 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,841 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:57,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:57,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:57,843 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-10-16 13:39:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,907 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-10-16 13:39:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:39:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,911 INFO L225 Difference]: With dead ends: 514 [2020-10-16 13:39:57,912 INFO L226 Difference]: Without dead ends: 466 [2020-10-16 13:39:57,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 13:39:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-16 13:39:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-10-16 13:39:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-16 13:39:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-10-16 13:39:57,932 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-10-16 13:39:57,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,935 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-10-16 13:39:57,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,935 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-10-16 13:39:57,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:57,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:39:57,937 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-16 13:39:57,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552871383] [2020-10-16 13:39:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,019 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 13:39:58,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552871383] [2020-10-16 13:39:58,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:58,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1424837777] [2020-10-16 13:39:58,021 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,023 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,027 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-10-16 13:39:58,027 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,050 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:58,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:58,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:58,051 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 4 states. [2020-10-16 13:39:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,080 INFO L93 Difference]: Finished difference Result 686 states and 2008 transitions. [2020-10-16 13:39:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:58,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 13:39:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,085 INFO L225 Difference]: With dead ends: 686 [2020-10-16 13:39:58,085 INFO L226 Difference]: Without dead ends: 490 [2020-10-16 13:39:58,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 13:39:58,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-16 13:39:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 442. [2020-10-16 13:39:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-16 13:39:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1272 transitions. [2020-10-16 13:39:58,101 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1272 transitions. Word has length 15 [2020-10-16 13:39:58,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,101 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1272 transitions. [2020-10-16 13:39:58,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:58,101 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1272 transitions. [2020-10-16 13:39:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:58,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:39:58,103 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 1 times [2020-10-16 13:39:58,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509839382] [2020-10-16 13:39:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,159 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 13:39:58,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509839382] [2020-10-16 13:39:58,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:58,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1132755053] [2020-10-16 13:39:58,160 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,163 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,169 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 85 transitions. [2020-10-16 13:39:58,170 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,311 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:58,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:58,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:58,312 INFO L87 Difference]: Start difference. First operand 442 states and 1272 transitions. Second operand 5 states. [2020-10-16 13:39:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,347 INFO L93 Difference]: Finished difference Result 578 states and 1616 transitions. [2020-10-16 13:39:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:58,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,350 INFO L225 Difference]: With dead ends: 578 [2020-10-16 13:39:58,350 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 13:39:58,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 13:39:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 13:39:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 13:39:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-16 13:39:58,359 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-16 13:39:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,360 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-16 13:39:58,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-16 13:39:58,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:58,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:39:58,361 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,362 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-16 13:39:58,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787806804] [2020-10-16 13:39:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,396 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 13:39:58,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787806804] [2020-10-16 13:39:58,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:58,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1137806302] [2020-10-16 13:39:58,398 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,400 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,405 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-10-16 13:39:58,405 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,420 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,441 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,453 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,463 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,489 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,512 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17833#(not (= 4 ~__unbuffered_cnt~0))] [2020-10-16 13:39:58,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:58,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:58,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:58,513 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 5 states. [2020-10-16 13:39:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,571 INFO L93 Difference]: Finished difference Result 244 states and 585 transitions. [2020-10-16 13:39:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:58,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,573 INFO L225 Difference]: With dead ends: 244 [2020-10-16 13:39:58,573 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 13:39:58,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 13:39:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 13:39:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 13:39:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 13:39:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-16 13:39:58,579 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 15 [2020-10-16 13:39:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,579 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-16 13:39:58,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-16 13:39:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:39:58,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,581 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 13:39:58,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 13:39:58,581 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-16 13:39:58,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344602070] [2020-10-16 13:39:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,626 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 13:39:58,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344602070] [2020-10-16 13:39:58,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:39:58,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1564961658] [2020-10-16 13:39:58,627 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,630 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,639 INFO L258 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-10-16 13:39:58,639 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,648 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,681 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,721 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,807 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:39:58,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:39:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:39:58,808 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-16 13:39:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,861 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-16 13:39:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:58,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-16 13:39:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,863 INFO L225 Difference]: With dead ends: 147 [2020-10-16 13:39:58,863 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 13:39:58,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 13 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 13:39:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-16 13:39:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-16 13:39:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-16 13:39:58,867 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-16 13:39:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,867 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-16 13:39:58,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:39:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-16 13:39:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:39:58,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 13:39:58,869 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-16 13:39:58,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010964213] [2020-10-16 13:39:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,911 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 13:39:58,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010964213] [2020-10-16 13:39:58,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:39:58,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1431682475] [2020-10-16 13:39:58,913 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,914 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,919 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-10-16 13:39:58,919 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,925 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:58,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:58,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:58,926 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-16 13:39:58,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,955 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-16 13:39:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:39:58,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-16 13:39:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,957 INFO L225 Difference]: With dead ends: 121 [2020-10-16 13:39:58,957 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 13:39:58,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 13:39:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-16 13:39:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-16 13:39:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-16 13:39:58,961 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-16 13:39:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,961 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-16 13:39:58,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-16 13:39:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:39:58,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 13:39:58,962 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-16 13:39:58,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430944013] [2020-10-16 13:39:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:59,012 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 13:39:59,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430944013] [2020-10-16 13:39:59,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:59,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 13:39:59,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1054573496] [2020-10-16 13:39:59,014 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:59,015 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:59,021 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-10-16 13:39:59,021 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:59,035 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:59,049 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19136#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:39:59,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 13:39:59,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:59,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 13:39:59,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:39:59,050 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 8 states. [2020-10-16 13:39:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:59,090 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-16 13:39:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:59,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-16 13:39:59,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:59,091 INFO L225 Difference]: With dead ends: 93 [2020-10-16 13:39:59,091 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:39:59,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:39:59,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:39:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:39:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:39:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:39:59,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-16 13:39:59,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:59,093 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:39:59,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 13:39:59,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:39:59,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:39:59,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 13:39:59,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:59 BasicIcfg [2020-10-16 13:39:59,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:39:59,100 INFO L168 Benchmark]: Toolchain (without parser) took 5791.10 ms. Allocated memory was 141.6 MB in the beginning and 281.0 MB in the end (delta: 139.5 MB). Free memory was 102.5 MB in the beginning and 162.5 MB in the end (delta: -60.0 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,101 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.70 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.6 MB in the end (delta: -59.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.80 ms. Allocated memory is still 205.0 MB. Free memory was 161.6 MB in the beginning and 159.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,104 INFO L168 Benchmark]: Boogie Preprocessor took 28.27 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 157.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,105 INFO L168 Benchmark]: RCFGBuilder took 490.09 ms. Allocated memory is still 205.0 MB. Free memory was 157.7 MB in the beginning and 133.8 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,106 INFO L168 Benchmark]: TraceAbstraction took 4497.52 ms. Allocated memory was 205.0 MB in the beginning and 281.0 MB in the end (delta: 76.0 MB). Free memory was 133.1 MB in the beginning and 162.5 MB in the end (delta: -29.4 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,114 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 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.70 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 161.6 MB in the end (delta: -59.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.80 ms. Allocated memory is still 205.0 MB. Free memory was 161.6 MB in the beginning and 159.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.27 ms. Allocated memory is still 205.0 MB. Free memory was 159.0 MB in the beginning and 157.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.09 ms. Allocated memory is still 205.0 MB. Free memory was 157.7 MB in the beginning and 133.8 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4497.52 ms. Allocated memory was 205.0 MB in the beginning and 281.0 MB in the end (delta: 76.0 MB). Free memory was 133.1 MB in the beginning and 162.5 MB in the end (delta: -29.4 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 940 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 353 SDtfs, 265 SDslu, 567 SDs, 0 SdLazy, 203 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 143 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 7133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...