/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:05:24,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:05:24,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:05:25,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:05:25,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:05:25,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:05:25,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:05:25,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:05:25,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:05:25,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:05:25,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:05:25,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:05:25,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:05:25,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:05:25,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:05:25,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:05:25,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:05:25,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:05:25,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:05:25,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:05:25,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:05:25,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:05:25,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:05:25,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:05:25,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 15:05:25,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 15:05:25,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 15:05:25,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 15:05:25,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 15:05:25,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 15:05:25,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:05:25,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:05:25,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:05:25,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:05:25,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:05:25,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:05:25,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:05:25,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:05:25,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:05:25,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:05:25,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:05:25,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 15:05:25,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:05:25,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:05:25,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:05:25,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:05:25,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:05:25,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:05:25,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:05:25,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:05:25,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:05:25,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:05:25,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:05:25,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:05:25,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:05:25,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:05:25,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:05:25,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:05:25,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:05:25,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:05:25,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:05:25,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:05:25,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:05:25,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:05:25,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:05:25,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:05:25,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:05:25,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:05:25,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:05:25,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:05:25,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:05:25,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:05:25,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:05:25,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:05:25,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:05:25,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:05:25,409 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:05:25,410 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-11 15:05:25,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71637e6fa/b45fd2610eb34883a9eec0bde501f1da/FLAGf0665162e [2020-10-11 15:05:26,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:05:26,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-11 15:05:26,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71637e6fa/b45fd2610eb34883a9eec0bde501f1da/FLAGf0665162e [2020-10-11 15:05:26,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71637e6fa/b45fd2610eb34883a9eec0bde501f1da [2020-10-11 15:05:26,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:05:26,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:05:26,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:05:26,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:05:26,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:05:26,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:05:26" (1/1) ... [2020-10-11 15:05:26,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8ba45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:26, skipping insertion in model container [2020-10-11 15:05:26,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:05:26" (1/1) ... [2020-10-11 15:05:26,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:05:26,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:05:26,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:05:26,902 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:05:26,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:05:27,056 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:05:27,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27 WrapperNode [2020-10-11 15:05:27,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:05:27,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:05:27,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:05:27,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:05:27,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:05:27,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:05:27,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:05:27,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:05:27,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... [2020-10-11 15:05:27,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:05:27,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:05:27,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:05:27,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:05:27,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:05:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:05:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:05:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:05:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:05:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:05:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:05:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:05:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:05:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:05:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:05:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-11 15:05:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-11 15:05:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:05:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:05:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:05:27,197 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:05:27,570 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:05:27,571 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:05:27,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:05:27 BoogieIcfgContainer [2020-10-11 15:05:27,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:05:27,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:05:27,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:05:27,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:05:27,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:05:26" (1/3) ... [2020-10-11 15:05:27,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b9f950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:05:27, skipping insertion in model container [2020-10-11 15:05:27,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:05:27" (2/3) ... [2020-10-11 15:05:27,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b9f950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:05:27, skipping insertion in model container [2020-10-11 15:05:27,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:05:27" (3/3) ... [2020-10-11 15:05:27,582 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-10-11 15:05:27,594 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:05:27,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:05:27,602 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:05:27,603 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:05:27,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,635 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,636 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,637 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,639 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,639 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,639 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,639 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,639 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,640 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,640 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,640 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,640 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,641 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,641 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,645 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,645 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,645 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,645 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,651 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,651 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,654 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,658 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:05:27,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 15:05:27,692 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:05:27,692 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:05:27,692 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:05:27,692 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:05:27,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:05:27,693 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:05:27,693 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:05:27,693 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:05:27,706 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:05:27,708 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-11 15:05:27,711 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-11 15:05:27,713 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-11 15:05:27,765 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-11 15:05:27,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:05:27,771 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. [2020-10-11 15:05:27,775 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-11 15:05:29,408 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-11 15:05:29,409 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-11 15:05:29,416 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-11 15:05:29,481 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-11 15:05:29,483 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-11 15:05:29,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 15:05:29,494 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:29,496 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:29,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:29,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-11 15:05:29,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:29,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196301619] [2020-10-11 15:05:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:29,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196301619] [2020-10-11 15:05:29,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:29,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:29,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179289143] [2020-10-11 15:05:29,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 15:05:29,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:29,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 15:05:29,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 15:05:29,782 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-11 15:05:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:29,839 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-11 15:05:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 15:05:29,841 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-11 15:05:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:29,869 INFO L225 Difference]: With dead ends: 850 [2020-10-11 15:05:29,869 INFO L226 Difference]: Without dead ends: 706 [2020-10-11 15:05:29,871 INFO L673 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 [2020-10-11 15:05:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-11 15:05:29,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-11 15:05:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-11 15:05:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-11 15:05:30,018 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-11 15:05:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:30,021 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-11 15:05:30,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 15:05:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-11 15:05:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:05:30,024 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:30,024 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:30,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:05:30,024 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:30,025 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-11 15:05:30,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:30,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027708722] [2020-10-11 15:05:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:30,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027708722] [2020-10-11 15:05:30,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:30,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:30,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176010901] [2020-10-11 15:05:30,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:30,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:30,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:30,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:30,146 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-11 15:05:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:30,196 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-11 15:05:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:30,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-11 15:05:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:30,204 INFO L225 Difference]: With dead ends: 802 [2020-10-11 15:05:30,204 INFO L226 Difference]: Without dead ends: 658 [2020-10-11 15:05:30,205 INFO L673 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 [2020-10-11 15:05:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-11 15:05:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-11 15:05:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-11 15:05:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-11 15:05:30,236 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-11 15:05:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:30,236 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-11 15:05:30,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-11 15:05:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:05:30,239 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:30,239 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:30,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:05:30,240 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-11 15:05:30,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:30,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453882590] [2020-10-11 15:05:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:30,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453882590] [2020-10-11 15:05:30,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:30,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746090226] [2020-10-11 15:05:30,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:30,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:30,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:30,344 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-11 15:05:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:30,384 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-11 15:05:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:30,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 15:05:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:30,390 INFO L225 Difference]: With dead ends: 718 [2020-10-11 15:05:30,390 INFO L226 Difference]: Without dead ends: 598 [2020-10-11 15:05:30,390 INFO L673 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 [2020-10-11 15:05:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-11 15:05:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-11 15:05:30,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-11 15:05:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-11 15:05:30,415 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-11 15:05:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:30,415 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-11 15:05:30,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-11 15:05:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:05:30,420 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:30,420 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:30,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:05:30,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-11 15:05:30,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:30,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508661092] [2020-10-11 15:05:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:30,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508661092] [2020-10-11 15:05:30,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:30,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:30,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091832590] [2020-10-11 15:05:30,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:30,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:30,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:30,518 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 5 states. [2020-10-11 15:05:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:30,567 INFO L93 Difference]: Finished difference Result 928 states and 3061 transitions. [2020-10-11 15:05:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:30,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 15:05:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:30,573 INFO L225 Difference]: With dead ends: 928 [2020-10-11 15:05:30,573 INFO L226 Difference]: Without dead ends: 550 [2020-10-11 15:05:30,574 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-11 15:05:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2020-10-11 15:05:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-11 15:05:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1794 transitions. [2020-10-11 15:05:30,594 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1794 transitions. Word has length 13 [2020-10-11 15:05:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:30,594 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 1794 transitions. [2020-10-11 15:05:30,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1794 transitions. [2020-10-11 15:05:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 15:05:30,596 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:30,596 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:30,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:05:30,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash 702868169, now seen corresponding path program 2 times [2020-10-11 15:05:30,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:30,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211826648] [2020-10-11 15:05:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:30,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211826648] [2020-10-11 15:05:30,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:30,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:05:30,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698954355] [2020-10-11 15:05:30,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:30,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:30,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:30,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:30,673 INFO L87 Difference]: Start difference. First operand 550 states and 1794 transitions. Second operand 4 states. [2020-10-11 15:05:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:30,704 INFO L93 Difference]: Finished difference Result 586 states and 1860 transitions. [2020-10-11 15:05:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:30,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-11 15:05:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:30,709 INFO L225 Difference]: With dead ends: 586 [2020-10-11 15:05:30,709 INFO L226 Difference]: Without dead ends: 514 [2020-10-11 15:05:30,710 INFO L673 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 [2020-10-11 15:05:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-11 15:05:30,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-11 15:05:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-11 15:05:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1656 transitions. [2020-10-11 15:05:30,729 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1656 transitions. Word has length 13 [2020-10-11 15:05:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:30,729 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1656 transitions. [2020-10-11 15:05:30,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1656 transitions. [2020-10-11 15:05:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:05:30,730 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:30,731 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:30,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:05:30,731 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:30,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-10-11 15:05:30,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:30,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993197781] [2020-10-11 15:05:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:30,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993197781] [2020-10-11 15:05:30,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:30,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:30,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457578943] [2020-10-11 15:05:30,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:30,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:30,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:30,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:30,780 INFO L87 Difference]: Start difference. First operand 514 states and 1656 transitions. Second operand 4 states. [2020-10-11 15:05:30,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:30,821 INFO L93 Difference]: Finished difference Result 776 states and 2379 transitions. [2020-10-11 15:05:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:30,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-11 15:05:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:30,826 INFO L225 Difference]: With dead ends: 776 [2020-10-11 15:05:30,826 INFO L226 Difference]: Without dead ends: 550 [2020-10-11 15:05:30,827 INFO L673 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 [2020-10-11 15:05:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-11 15:05:30,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 478. [2020-10-11 15:05:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-11 15:05:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1450 transitions. [2020-10-11 15:05:30,852 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1450 transitions. Word has length 14 [2020-10-11 15:05:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:30,852 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 1450 transitions. [2020-10-11 15:05:30,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1450 transitions. [2020-10-11 15:05:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:05:30,854 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:30,855 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:30,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:05:30,855 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:30,856 INFO L82 PathProgramCache]: Analyzing trace with hash -281370534, now seen corresponding path program 1 times [2020-10-11 15:05:30,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:30,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883079927] [2020-10-11 15:05:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:30,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883079927] [2020-10-11 15:05:30,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:30,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:30,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514918021] [2020-10-11 15:05:30,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:30,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:30,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:30,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:30,910 INFO L87 Difference]: Start difference. First operand 478 states and 1450 transitions. Second operand 5 states. [2020-10-11 15:05:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:30,977 INFO L93 Difference]: Finished difference Result 668 states and 1981 transitions. [2020-10-11 15:05:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:05:30,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-11 15:05:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:30,980 INFO L225 Difference]: With dead ends: 668 [2020-10-11 15:05:30,981 INFO L226 Difference]: Without dead ends: 326 [2020-10-11 15:05:30,981 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:05:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-11 15:05:30,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2020-10-11 15:05:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-11 15:05:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 955 transitions. [2020-10-11 15:05:30,996 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 955 transitions. Word has length 14 [2020-10-11 15:05:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:30,997 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 955 transitions. [2020-10-11 15:05:30,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 955 transitions. [2020-10-11 15:05:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:05:30,998 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:30,998 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:30,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:05:30,999 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:30,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:30,999 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-10-11 15:05:31,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:31,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976393497] [2020-10-11 15:05:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:31,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976393497] [2020-10-11 15:05:31,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:31,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:31,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654835428] [2020-10-11 15:05:31,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:31,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:31,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:31,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:31,057 INFO L87 Difference]: Start difference. First operand 326 states and 955 transitions. Second operand 4 states. [2020-10-11 15:05:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:31,095 INFO L93 Difference]: Finished difference Result 390 states and 1053 transitions. [2020-10-11 15:05:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:05:31,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-11 15:05:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:31,098 INFO L225 Difference]: With dead ends: 390 [2020-10-11 15:05:31,098 INFO L226 Difference]: Without dead ends: 293 [2020-10-11 15:05:31,098 INFO L673 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 [2020-10-11 15:05:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-11 15:05:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-10-11 15:05:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-11 15:05:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 804 transitions. [2020-10-11 15:05:31,110 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 804 transitions. Word has length 15 [2020-10-11 15:05:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:31,110 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 804 transitions. [2020-10-11 15:05:31,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 804 transitions. [2020-10-11 15:05:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:05:31,112 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:31,112 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:31,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:05:31,112 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-11 15:05:31,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:31,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004257135] [2020-10-11 15:05:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:31,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004257135] [2020-10-11 15:05:31,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:31,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:05:31,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828204592] [2020-10-11 15:05:31,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:31,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:31,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:31,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:31,175 INFO L87 Difference]: Start difference. First operand 293 states and 804 transitions. Second operand 5 states. [2020-10-11 15:05:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:31,251 INFO L93 Difference]: Finished difference Result 296 states and 728 transitions. [2020-10-11 15:05:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:05:31,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-11 15:05:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:31,254 INFO L225 Difference]: With dead ends: 296 [2020-10-11 15:05:31,254 INFO L226 Difference]: Without dead ends: 218 [2020-10-11 15:05:31,254 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:05:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-11 15:05:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-11 15:05:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-11 15:05:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 525 transitions. [2020-10-11 15:05:31,262 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 525 transitions. Word has length 16 [2020-10-11 15:05:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:31,262 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 525 transitions. [2020-10-11 15:05:31,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 525 transitions. [2020-10-11 15:05:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 15:05:31,263 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:31,263 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:31,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:05:31,264 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:31,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-11 15:05:31,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:31,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611471048] [2020-10-11 15:05:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:31,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611471048] [2020-10-11 15:05:31,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:31,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:05:31,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572184004] [2020-10-11 15:05:31,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:05:31,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:31,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:05:31,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:05:31,328 INFO L87 Difference]: Start difference. First operand 218 states and 525 transitions. Second operand 6 states. [2020-10-11 15:05:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:31,384 INFO L93 Difference]: Finished difference Result 196 states and 441 transitions. [2020-10-11 15:05:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:05:31,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-11 15:05:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:31,386 INFO L225 Difference]: With dead ends: 196 [2020-10-11 15:05:31,386 INFO L226 Difference]: Without dead ends: 157 [2020-10-11 15:05:31,386 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:31,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-11 15:05:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-11 15:05:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-11 15:05:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-10-11 15:05:31,391 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 17 [2020-10-11 15:05:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:31,392 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-10-11 15:05:31,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:05:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-10-11 15:05:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:05:31,393 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:31,393 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:31,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 15:05:31,394 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-11 15:05:31,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:31,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868466327] [2020-10-11 15:05:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:31,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868466327] [2020-10-11 15:05:31,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:31,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:05:31,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665843902] [2020-10-11 15:05:31,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:05:31,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:31,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:05:31,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:05:31,439 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-10-11 15:05:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:31,471 INFO L93 Difference]: Finished difference Result 197 states and 430 transitions. [2020-10-11 15:05:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:05:31,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-11 15:05:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:31,473 INFO L225 Difference]: With dead ends: 197 [2020-10-11 15:05:31,473 INFO L226 Difference]: Without dead ends: 148 [2020-10-11 15:05:31,474 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-11 15:05:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-10-11 15:05:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 15:05:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 314 transitions. [2020-10-11 15:05:31,480 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 314 transitions. Word has length 19 [2020-10-11 15:05:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:31,480 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 314 transitions. [2020-10-11 15:05:31,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:05:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 314 transitions. [2020-10-11 15:05:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:05:31,481 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:31,481 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:31,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 15:05:31,482 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:31,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-11 15:05:31,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:31,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844984876] [2020-10-11 15:05:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:31,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844984876] [2020-10-11 15:05:31,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:31,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 15:05:31,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496066841] [2020-10-11 15:05:31,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 15:05:31,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:31,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 15:05:31,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-11 15:05:31,559 INFO L87 Difference]: Start difference. First operand 144 states and 314 transitions. Second operand 7 states. [2020-10-11 15:05:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:31,626 INFO L93 Difference]: Finished difference Result 133 states and 290 transitions. [2020-10-11 15:05:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 15:05:31,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-11 15:05:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:31,627 INFO L225 Difference]: With dead ends: 133 [2020-10-11 15:05:31,627 INFO L226 Difference]: Without dead ends: 52 [2020-10-11 15:05:31,628 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:05:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-11 15:05:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-11 15:05:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-11 15:05:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-11 15:05:31,630 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 19 [2020-10-11 15:05:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:31,631 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-11 15:05:31,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 15:05:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-11 15:05:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:05:31,631 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:05:31,631 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:05:31,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 15:05:31,632 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:05:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:05:31,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2139262285, now seen corresponding path program 1 times [2020-10-11 15:05:31,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:05:31,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628442355] [2020-10-11 15:05:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:05:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:05:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:05:31,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628442355] [2020-10-11 15:05:31,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:05:31,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:05:31,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592661660] [2020-10-11 15:05:31,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:05:31,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:05:31,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:05:31,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:05:31,672 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 4 states. [2020-10-11 15:05:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:05:31,687 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-11 15:05:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 15:05:31,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-11 15:05:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:05:31,688 INFO L225 Difference]: With dead ends: 51 [2020-10-11 15:05:31,688 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:05:31,688 INFO L673 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 [2020-10-11 15:05:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:05:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:05:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:05:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:05:31,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-11 15:05:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:05:31,689 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:05:31,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:05:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:05:31,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:05:31,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 15:05:31,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:05:31 BasicIcfg [2020-10-11 15:05:31,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:05:31,696 INFO L168 Benchmark]: Toolchain (without parser) took 5372.50 ms. Allocated memory was 249.6 MB in the beginning and 425.7 MB in the end (delta: 176.2 MB). Free memory was 204.7 MB in the beginning and 309.4 MB in the end (delta: -104.7 MB). Peak memory consumption was 71.4 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:31,697 INFO L168 Benchmark]: CDTParser took 1.43 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:05:31,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.14 ms. Allocated memory was 249.6 MB in the beginning and 308.8 MB in the end (delta: 59.2 MB). Free memory was 204.7 MB in the beginning and 259.4 MB in the end (delta: -54.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:31,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 308.8 MB. Free memory was 259.4 MB in the beginning and 256.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:31,699 INFO L168 Benchmark]: Boogie Preprocessor took 26.40 ms. Allocated memory is still 308.8 MB. Free memory was 256.9 MB in the beginning and 254.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:31,700 INFO L168 Benchmark]: RCFGBuilder took 441.35 ms. Allocated memory is still 308.8 MB. Free memory was 254.4 MB in the beginning and 230.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:31,700 INFO L168 Benchmark]: TraceAbstraction took 4118.92 ms. Allocated memory was 308.8 MB in the beginning and 425.7 MB in the end (delta: 116.9 MB). Free memory was 230.0 MB in the beginning and 309.4 MB in the end (delta: -79.4 MB). Peak memory consumption was 37.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:05:31,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 733.14 ms. Allocated memory was 249.6 MB in the beginning and 308.8 MB in the end (delta: 59.2 MB). Free memory was 204.7 MB in the beginning and 259.4 MB in the end (delta: -54.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 308.8 MB. Free memory was 259.4 MB in the beginning and 256.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.40 ms. Allocated memory is still 308.8 MB. Free memory was 256.9 MB in the beginning and 254.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 441.35 ms. Allocated memory is still 308.8 MB. Free memory was 254.4 MB in the beginning and 230.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4118.92 ms. Allocated memory was 308.8 MB in the beginning and 425.7 MB in the end (delta: 116.9 MB). Free memory was 230.0 MB in the beginning and 309.4 MB in the end (delta: -79.4 MB). Peak memory consumption was 37.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 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: 4.0s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 345 SDtfs, 327 SDslu, 580 SDs, 0 SdLazy, 232 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 76 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 7691 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...