/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:06:26,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:06:26,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:06:26,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:06:26,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:06:26,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:06:26,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:06:26,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:06:26,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:06:26,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:06:26,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:06:26,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:06:26,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:06:26,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:06:26,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:06:26,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:06:26,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:06:26,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:06:27,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:06:27,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:06:27,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:06:27,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:06:27,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:06:27,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:06:27,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:06:27,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:06:27,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:06:27,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:06:27,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:06:27,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:06:27,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:06:27,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:06:27,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:06:27,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:06:27,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:06:27,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:06:27,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:06:27,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:06:27,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:06:27,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:06:27,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:06:27,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:06:27,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:06:27,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:06:27,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:06:27,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:06:27,108 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:06:27,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:06:27,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:06:27,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:06:27,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:06:27,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:06:27,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:06:27,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:06:27,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:06:27,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:06:27,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:06:27,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:06:27,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:06:27,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:06:27,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:06:27,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:06:27,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:06:27,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:06:27,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:06:27,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:06:27,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:06:27,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:06:27,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:06:27,114 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:06:27,114 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:06:27,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:06:27,114 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:06:27,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:06:27,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:06:27,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:06:27,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:06:27,527 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:06:27,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-11-09 17:06:27,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce9102fd/428d5630fe4d401ea1e4f0745eeb99a1/FLAG9508b5e68 [2020-11-09 17:06:28,383 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:06:28,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-11-09 17:06:28,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce9102fd/428d5630fe4d401ea1e4f0745eeb99a1/FLAG9508b5e68 [2020-11-09 17:06:28,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce9102fd/428d5630fe4d401ea1e4f0745eeb99a1 [2020-11-09 17:06:28,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:06:28,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:06:28,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:06:28,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:06:28,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:06:28,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:06:28" (1/1) ... [2020-11-09 17:06:28,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd14c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:28, skipping insertion in model container [2020-11-09 17:06:28,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:06:28" (1/1) ... [2020-11-09 17:06:28,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:06:28,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:06:29,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:06:29,227 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:06:29,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:06:29,473 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:06:29,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29 WrapperNode [2020-11-09 17:06:29,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:06:29,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:06:29,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:06:29,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:06:29,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:06:29,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:06:29,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:06:29,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:06:29,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... [2020-11-09 17:06:29,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:06:29,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:06:29,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:06:29,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:06:29,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:06:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:06:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:06:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:06:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:06:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:06:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:06:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:06:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:06:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:06:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:06:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-09 17:06:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-09 17:06:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:06:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:06:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:06:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:06:29,688 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:06:30,293 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:06:30,293 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:06:30,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:06:30 BoogieIcfgContainer [2020-11-09 17:06:30,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:06:30,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:06:30,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:06:30,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:06:30,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:06:28" (1/3) ... [2020-11-09 17:06:30,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d535ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:06:30, skipping insertion in model container [2020-11-09 17:06:30,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:06:29" (2/3) ... [2020-11-09 17:06:30,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d535ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:06:30, skipping insertion in model container [2020-11-09 17:06:30,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:06:30" (3/3) ... [2020-11-09 17:06:30,310 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-11-09 17:06:30,326 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:06:30,327 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:06:30,331 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:06:30,332 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:06:30,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,380 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,381 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,394 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,394 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,397 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,397 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,398 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,398 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,398 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,399 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,399 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,399 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,399 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,399 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,400 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,400 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,408 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,416 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,416 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,416 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,417 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,432 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,432 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:06:30,435 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:06:30,447 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-09 17:06:30,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:06:30,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:06:30,471 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:06:30,471 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:06:30,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:06:30,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:06:30,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:06:30,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:06:30,485 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:06:30,486 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-09 17:06:30,489 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-09 17:06:30,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-11-09 17:06:30,544 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-11-09 17:06:30,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:06:30,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-09 17:06:30,553 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-09 17:06:34,174 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 17:06:34,280 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:06:34,530 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 17:06:34,646 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:06:34,770 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-11-09 17:06:34,985 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-11-09 17:06:35,067 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-11-09 17:06:35,067 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-11-09 17:06:35,077 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-11-09 17:06:35,145 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-11-09 17:06:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-11-09 17:06:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:06:35,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:35,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:35,158 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:35,165 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-11-09 17:06:35,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:35,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560830723] [2020-11-09 17:06:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:35,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560830723] [2020-11-09 17:06:35,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:35,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:06:35,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1840442175] [2020-11-09 17:06:35,422 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:35,426 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:35,442 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-11-09 17:06:35,442 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:35,447 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:35,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:06:35,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:35,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:06:35,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:35,467 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-11-09 17:06:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:35,518 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-11-09 17:06:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:06:35,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 17:06:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:35,550 INFO L225 Difference]: With dead ends: 670 [2020-11-09 17:06:35,550 INFO L226 Difference]: Without dead ends: 526 [2020-11-09 17:06:35,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-11-09 17:06:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-11-09 17:06:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-11-09 17:06:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-11-09 17:06:35,663 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-11-09 17:06:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:35,664 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-11-09 17:06:35,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:06:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-11-09 17:06:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:06:35,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:35,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:35,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:06:35,667 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1879702246, now seen corresponding path program 1 times [2020-11-09 17:06:35,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:35,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21274787] [2020-11-09 17:06:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:35,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21274787] [2020-11-09 17:06:35,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:35,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:06:35,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1439689325] [2020-11-09 17:06:35,812 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:35,814 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:35,818 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 17:06:35,819 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:35,957 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:35,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:06:35,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:35,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:06:35,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:06:35,962 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-11-09 17:06:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:36,015 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-11-09 17:06:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:06:36,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 17:06:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:36,025 INFO L225 Difference]: With dead ends: 724 [2020-11-09 17:06:36,025 INFO L226 Difference]: Without dead ends: 412 [2020-11-09 17:06:36,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:06:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-09 17:06:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-11-09 17:06:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-11-09 17:06:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-11-09 17:06:36,061 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-11-09 17:06:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:36,061 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-11-09 17:06:36,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:06:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-11-09 17:06:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:06:36,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:36,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:36,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:06:36,070 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash -647796126, now seen corresponding path program 1 times [2020-11-09 17:06:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:36,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138152185] [2020-11-09 17:06:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:36,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138152185] [2020-11-09 17:06:36,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:36,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:06:36,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2012124608] [2020-11-09 17:06:36,141 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:36,142 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:36,144 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-11-09 17:06:36,144 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:36,154 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:36,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:06:36,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:36,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:06:36,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:36,156 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 3 states. [2020-11-09 17:06:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:36,169 INFO L93 Difference]: Finished difference Result 518 states and 1560 transitions. [2020-11-09 17:06:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:06:36,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 17:06:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:36,174 INFO L225 Difference]: With dead ends: 518 [2020-11-09 17:06:36,174 INFO L226 Difference]: Without dead ends: 422 [2020-11-09 17:06:36,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-11-09 17:06:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 382. [2020-11-09 17:06:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-11-09 17:06:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1156 transitions. [2020-11-09 17:06:36,190 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1156 transitions. Word has length 12 [2020-11-09 17:06:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:36,191 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 1156 transitions. [2020-11-09 17:06:36,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:06:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1156 transitions. [2020-11-09 17:06:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 17:06:36,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:36,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:36,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:06:36,193 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1393155433, now seen corresponding path program 1 times [2020-11-09 17:06:36,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:36,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569539459] [2020-11-09 17:06:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:36,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569539459] [2020-11-09 17:06:36,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:36,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:06:36,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1159703918] [2020-11-09 17:06:36,306 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:36,311 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:36,315 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-11-09 17:06:36,316 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:36,391 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:36,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:06:36,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:36,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:06:36,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:36,393 INFO L87 Difference]: Start difference. First operand 382 states and 1156 transitions. Second operand 3 states. [2020-11-09 17:06:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:36,405 INFO L93 Difference]: Finished difference Result 370 states and 1112 transitions. [2020-11-09 17:06:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:06:36,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-09 17:06:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:36,409 INFO L225 Difference]: With dead ends: 370 [2020-11-09 17:06:36,410 INFO L226 Difference]: Without dead ends: 370 [2020-11-09 17:06:36,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-11-09 17:06:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2020-11-09 17:06:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-11-09 17:06:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1112 transitions. [2020-11-09 17:06:36,424 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1112 transitions. Word has length 13 [2020-11-09 17:06:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:36,424 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 1112 transitions. [2020-11-09 17:06:36,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:06:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1112 transitions. [2020-11-09 17:06:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:06:36,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:36,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:36,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:06:36,426 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1625881232, now seen corresponding path program 1 times [2020-11-09 17:06:36,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:36,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079848867] [2020-11-09 17:06:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:36,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079848867] [2020-11-09 17:06:36,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:36,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:06:36,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [499779205] [2020-11-09 17:06:36,529 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:36,532 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:36,537 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-11-09 17:06:36,538 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:36,620 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:36,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:06:36,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:36,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:06:36,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:06:36,621 INFO L87 Difference]: Start difference. First operand 370 states and 1112 transitions. Second operand 4 states. [2020-11-09 17:06:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:36,652 INFO L93 Difference]: Finished difference Result 530 states and 1522 transitions. [2020-11-09 17:06:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:06:36,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-09 17:06:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:36,655 INFO L225 Difference]: With dead ends: 530 [2020-11-09 17:06:36,655 INFO L226 Difference]: Without dead ends: 278 [2020-11-09 17:06:36,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:06:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-11-09 17:06:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 254. [2020-11-09 17:06:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-09 17:06:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 707 transitions. [2020-11-09 17:06:36,664 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 707 transitions. Word has length 14 [2020-11-09 17:06:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:36,665 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 707 transitions. [2020-11-09 17:06:36,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:06:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 707 transitions. [2020-11-09 17:06:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:06:36,666 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:36,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:36,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:06:36,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:36,667 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 2 times [2020-11-09 17:06:36,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:36,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236085272] [2020-11-09 17:06:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:36,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236085272] [2020-11-09 17:06:36,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:36,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:06:36,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1578015837] [2020-11-09 17:06:36,792 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:36,795 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:36,801 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-11-09 17:06:36,801 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:36,830 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:36,872 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:36,906 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:36,928 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:36,938 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:36,954 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:36,982 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:36,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:37,006 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8239#(not (= 4 ~__unbuffered_cnt~0))] [2020-11-09 17:06:37,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:06:37,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:37,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:06:37,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:06:37,008 INFO L87 Difference]: Start difference. First operand 254 states and 707 transitions. Second operand 5 states. [2020-11-09 17:06:37,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:37,083 INFO L93 Difference]: Finished difference Result 263 states and 659 transitions. [2020-11-09 17:06:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:06:37,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 17:06:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:37,085 INFO L225 Difference]: With dead ends: 263 [2020-11-09 17:06:37,085 INFO L226 Difference]: Without dead ends: 178 [2020-11-09 17:06:37,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:06:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-09 17:06:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-11-09 17:06:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-11-09 17:06:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 414 transitions. [2020-11-09 17:06:37,092 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 414 transitions. Word has length 14 [2020-11-09 17:06:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:37,092 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 414 transitions. [2020-11-09 17:06:37,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:06:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 414 transitions. [2020-11-09 17:06:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 17:06:37,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:37,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:37,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:06:37,094 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:37,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:37,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-11-09 17:06:37,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:37,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954278001] [2020-11-09 17:06:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:37,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954278001] [2020-11-09 17:06:37,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:37,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:06:37,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [769491066] [2020-11-09 17:06:37,173 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:37,175 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:37,182 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-11-09 17:06:37,182 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:37,191 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:37,220 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:37,237 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:37,309 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:37,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 17:06:37,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:37,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 17:06:37,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 17:06:37,311 INFO L87 Difference]: Start difference. First operand 178 states and 414 transitions. Second operand 6 states. [2020-11-09 17:06:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:37,407 INFO L93 Difference]: Finished difference Result 171 states and 376 transitions. [2020-11-09 17:06:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:06:37,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-09 17:06:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:37,409 INFO L225 Difference]: With dead ends: 171 [2020-11-09 17:06:37,409 INFO L226 Difference]: Without dead ends: 137 [2020-11-09 17:06:37,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:06:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-09 17:06:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-09 17:06:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-09 17:06:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-11-09 17:06:37,421 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 16 [2020-11-09 17:06:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:37,421 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-11-09 17:06:37,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 17:06:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-11-09 17:06:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:06:37,421 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:37,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:37,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:06:37,422 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:37,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:37,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 1 times [2020-11-09 17:06:37,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:37,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027632618] [2020-11-09 17:06:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:37,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027632618] [2020-11-09 17:06:37,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:37,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 17:06:37,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [401822652] [2020-11-09 17:06:37,505 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:37,507 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:37,517 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 66 transitions. [2020-11-09 17:06:37,517 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:37,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:06:37,553 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:37,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:06:37,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:37,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:06:37,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:06:37,554 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 7 states. [2020-11-09 17:06:37,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:37,679 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-11-09 17:06:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 17:06:37,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-09 17:06:37,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:37,680 INFO L225 Difference]: With dead ends: 132 [2020-11-09 17:06:37,680 INFO L226 Difference]: Without dead ends: 51 [2020-11-09 17:06:37,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:06:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-09 17:06:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-09 17:06:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-09 17:06:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-11-09 17:06:37,684 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-11-09 17:06:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:37,684 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-11-09 17:06:37,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:06:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-11-09 17:06:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-09 17:06:37,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:06:37,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:06:37,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:06:37,685 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:06:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:06:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-11-09 17:06:37,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:06:37,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846508256] [2020-11-09 17:06:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:06:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:06:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:06:37,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846508256] [2020-11-09 17:06:37,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:06:37,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:06:37,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1003743732] [2020-11-09 17:06:37,760 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:06:37,763 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:06:37,775 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 80 transitions. [2020-11-09 17:06:37,775 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:06:37,780 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:06:37,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:06:37,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:06:37,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:06:37,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:37,781 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-11-09 17:06:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:06:37,791 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-11-09 17:06:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:06:37,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-09 17:06:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:06:37,792 INFO L225 Difference]: With dead ends: 50 [2020-11-09 17:06:37,792 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:06:37,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:06:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:06:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:06:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:06:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:06:37,793 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-09 17:06:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:06:37,793 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:06:37,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:06:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:06:37,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:06:37,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:06:37,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:06:37 BasicIcfg [2020-11-09 17:06:37,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:06:37,799 INFO L168 Benchmark]: Toolchain (without parser) took 9198.01 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 126.1 MB in the beginning and 176.9 MB in the end (delta: -50.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-11-09 17:06:37,800 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 80.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:06:37,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 865.12 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 126.2 MB in the end (delta: -673.7 kB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-11-09 17:06:37,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.19 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 124.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:06:37,802 INFO L168 Benchmark]: Boogie Preprocessor took 61.67 ms. Allocated memory is still 152.0 MB. Free memory was 124.5 MB in the beginning and 123.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:06:37,803 INFO L168 Benchmark]: RCFGBuilder took 690.88 ms. Allocated memory is still 152.0 MB. Free memory was 123.0 MB in the beginning and 99.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:06:37,804 INFO L168 Benchmark]: TraceAbstraction took 7495.87 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 98.9 MB in the beginning and 176.9 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:06:37,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 80.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 865.12 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 126.2 MB in the end (delta: -673.7 kB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 68.19 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 124.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.67 ms. Allocated memory is still 152.0 MB. Free memory was 124.5 MB in the beginning and 123.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 690.88 ms. Allocated memory is still 152.0 MB. Free memory was 123.0 MB in the beginning and 99.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7495.87 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 98.9 MB in the beginning and 176.9 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1132 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 183 SDtfs, 153 SDslu, 248 SDs, 0 SdLazy, 152 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 5161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...