/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:08:39,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:08:39,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:08:39,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:08:39,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:08:39,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:08:39,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:08:39,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:08:39,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:08:39,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:08:39,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:08:39,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:08:39,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:08:39,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:08:39,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:08:39,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:08:39,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:08:39,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:08:39,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:08:39,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:08:39,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:08:39,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:08:39,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:08:39,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:08:39,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:08:39,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:08:39,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:08:39,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:08:39,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:08:39,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:08:39,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:08:39,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:08:39,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:08:39,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:08:39,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:08:39,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:08:39,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:08:39,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:08:39,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:08:39,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:08:39,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:08:39,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:08:39,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:08:39,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:08:39,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:08:39,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:08:39,101 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:08:39,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:08:39,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:08:39,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:08:39,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:08:39,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:08:39,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:08:39,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:08:39,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:08:39,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:08:39,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:08:39,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:08:39,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:08:39,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:08:39,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:08:39,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:08:39,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:08:39,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:08:39,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:08:39,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:08:39,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:08:39,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:08:39,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:08:39,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:08:39,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:08:39,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:08:39,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:08:39,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:08:39,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:08:39,396 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:08:39,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-17 22:08:39,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e036073/42fff205681848c8a78c1e38e95c2a0d/FLAG805ee0ef6 [2020-04-17 22:08:39,994 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:08:39,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-17 22:08:40,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e036073/42fff205681848c8a78c1e38e95c2a0d/FLAG805ee0ef6 [2020-04-17 22:08:40,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e036073/42fff205681848c8a78c1e38e95c2a0d [2020-04-17 22:08:40,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:08:40,329 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:08:40,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:08:40,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:08:40,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:08:40,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:08:40" (1/1) ... [2020-04-17 22:08:40,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18164ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:40, skipping insertion in model container [2020-04-17 22:08:40,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:08:40" (1/1) ... [2020-04-17 22:08:40,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:08:40,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:08:40,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:08:40,901 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:08:40,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:08:41,034 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:08:41,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41 WrapperNode [2020-04-17 22:08:41,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:08:41,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:08:41,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:08:41,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:08:41,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:08:41,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:08:41,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:08:41,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:08:41,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (1/1) ... [2020-04-17 22:08:41,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:08:41,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:08:41,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:08:41,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:08:41,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (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 [2020-04-17 22:08:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:08:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:08:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:08:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:08:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:08:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:08:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:08:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:08:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:08:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:08:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 22:08:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 22:08:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:08:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:08:41,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:08:41,208 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:08:41,680 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:08:41,681 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:08:41,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:08:41 BoogieIcfgContainer [2020-04-17 22:08:41,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:08:41,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:08:41,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:08:41,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:08:41,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:08:40" (1/3) ... [2020-04-17 22:08:41,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab89385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:08:41, skipping insertion in model container [2020-04-17 22:08:41,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:41" (2/3) ... [2020-04-17 22:08:41,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab89385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:08:41, skipping insertion in model container [2020-04-17 22:08:41,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:08:41" (3/3) ... [2020-04-17 22:08:41,695 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-04-17 22:08:41,707 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:08:41,707 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:08:41,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:08:41,716 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:08:41,747 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,747 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,748 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,748 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,749 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,749 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,750 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,750 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,750 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,750 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,751 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,751 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,752 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,752 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,752 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,752 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,753 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,753 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,754 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,754 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,754 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,754 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,755 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,755 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,759 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,760 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,760 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,760 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,766 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,767 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,767 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,767 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,770 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,770 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,770 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,770 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,774 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,774 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,774 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,775 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:41,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 22:08:41,811 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:08:41,811 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:08:41,811 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:08:41,811 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:08:41,811 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:08:41,812 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:08:41,812 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:08:41,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:08:41,828 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:41,830 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:41,878 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 22:08:41,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:08:41,884 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. [2020-04-17 22:08:41,887 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:41,911 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 22:08:41,912 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:08:41,913 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. [2020-04-17 22:08:41,915 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-17 22:08:41,916 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:08:43,768 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 22:08:43,911 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-17 22:08:43,912 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-17 22:08:43,916 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-17 22:08:43,992 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-17 22:08:43,996 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-17 22:08:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:08:44,009 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:44,010 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:44,011 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-17 22:08:44,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:44,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310400052] [2020-04-17 22:08:44,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:44,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310400052] [2020-04-17 22:08:44,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:44,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:44,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965412379] [2020-04-17 22:08:44,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:08:44,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:44,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:08:44,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:08:44,325 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-17 22:08:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:44,388 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-17 22:08:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:08:44,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 22:08:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:44,426 INFO L225 Difference]: With dead ends: 850 [2020-04-17 22:08:44,427 INFO L226 Difference]: Without dead ends: 706 [2020-04-17 22:08:44,428 INFO L678 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 [2020-04-17 22:08:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-17 22:08:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-17 22:08:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-17 22:08:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-17 22:08:44,569 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-17 22:08:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:44,571 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-17 22:08:44,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:08:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-17 22:08:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:08:44,580 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:44,580 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:44,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:44,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:44,581 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-17 22:08:44,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:44,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178669216] [2020-04-17 22:08:44,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:44,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178669216] [2020-04-17 22:08:44,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:44,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:44,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518331276] [2020-04-17 22:08:44,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:44,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:44,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:44,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:44,738 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-17 22:08:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:44,779 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-17 22:08:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:44,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:08:44,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:44,787 INFO L225 Difference]: With dead ends: 778 [2020-04-17 22:08:44,787 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 22:08:44,788 INFO L678 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 [2020-04-17 22:08:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 22:08:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-17 22:08:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-17 22:08:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-17 22:08:44,841 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-17 22:08:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:44,841 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-17 22:08:44,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-17 22:08:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:08:44,843 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:44,843 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:44,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1068447712, now seen corresponding path program 1 times [2020-04-17 22:08:44,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:44,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737855769] [2020-04-17 22:08:44,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:44,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737855769] [2020-04-17 22:08:44,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:44,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:44,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594496011] [2020-04-17 22:08:44,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:44,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:44,941 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-17 22:08:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:44,983 INFO L93 Difference]: Finished difference Result 718 states and 2351 transitions. [2020-04-17 22:08:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:44,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:08:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:44,988 INFO L225 Difference]: With dead ends: 718 [2020-04-17 22:08:44,989 INFO L226 Difference]: Without dead ends: 610 [2020-04-17 22:08:44,989 INFO L678 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 [2020-04-17 22:08:44,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-17 22:08:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-04-17 22:08:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-04-17 22:08:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2042 transitions. [2020-04-17 22:08:45,014 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2042 transitions. Word has length 12 [2020-04-17 22:08:45,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,014 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 2042 transitions. [2020-04-17 22:08:45,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2042 transitions. [2020-04-17 22:08:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:08:45,016 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:45,016 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:45,016 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:45,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1923922428, now seen corresponding path program 1 times [2020-04-17 22:08:45,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:45,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303463321] [2020-04-17 22:08:45,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:45,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303463321] [2020-04-17 22:08:45,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:45,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:45,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670397183] [2020-04-17 22:08:45,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:45,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:45,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:45,092 INFO L87 Difference]: Start difference. First operand 610 states and 2042 transitions. Second operand 4 states. [2020-04-17 22:08:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:45,125 INFO L93 Difference]: Finished difference Result 674 states and 2178 transitions. [2020-04-17 22:08:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:45,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:08:45,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:45,130 INFO L225 Difference]: With dead ends: 674 [2020-04-17 22:08:45,131 INFO L226 Difference]: Without dead ends: 578 [2020-04-17 22:08:45,131 INFO L678 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 [2020-04-17 22:08:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-17 22:08:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-17 22:08:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-17 22:08:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-17 22:08:45,153 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-17 22:08:45,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,153 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-17 22:08:45,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:45,154 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-17 22:08:45,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:08:45,155 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:45,155 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:45,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:45,156 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-17 22:08:45,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:45,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937271602] [2020-04-17 22:08:45,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:45,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937271602] [2020-04-17 22:08:45,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:45,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:45,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845353635] [2020-04-17 22:08:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:45,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:45,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:45,230 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-04-17 22:08:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:45,262 INFO L93 Difference]: Finished difference Result 610 states and 1962 transitions. [2020-04-17 22:08:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:45,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:08:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:45,268 INFO L225 Difference]: With dead ends: 610 [2020-04-17 22:08:45,268 INFO L226 Difference]: Without dead ends: 546 [2020-04-17 22:08:45,269 INFO L678 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 [2020-04-17 22:08:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-04-17 22:08:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2020-04-17 22:08:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-04-17 22:08:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1786 transitions. [2020-04-17 22:08:45,287 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1786 transitions. Word has length 14 [2020-04-17 22:08:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,288 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 1786 transitions. [2020-04-17 22:08:45,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1786 transitions. [2020-04-17 22:08:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:45,290 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:45,290 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:45,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:45,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 1 times [2020-04-17 22:08:45,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:45,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352043096] [2020-04-17 22:08:45,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:45,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352043096] [2020-04-17 22:08:45,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:45,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:45,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426863240] [2020-04-17 22:08:45,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:45,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:45,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:45,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:45,383 INFO L87 Difference]: Start difference. First operand 546 states and 1786 transitions. Second operand 4 states. [2020-04-17 22:08:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:45,427 INFO L93 Difference]: Finished difference Result 794 states and 2462 transitions. [2020-04-17 22:08:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:45,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 22:08:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:45,432 INFO L225 Difference]: With dead ends: 794 [2020-04-17 22:08:45,432 INFO L226 Difference]: Without dead ends: 578 [2020-04-17 22:08:45,433 INFO L678 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 [2020-04-17 22:08:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-17 22:08:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 514. [2020-04-17 22:08:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-17 22:08:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1598 transitions. [2020-04-17 22:08:45,453 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1598 transitions. Word has length 15 [2020-04-17 22:08:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,454 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1598 transitions. [2020-04-17 22:08:45,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1598 transitions. [2020-04-17 22:08:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:45,456 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:45,456 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:45,456 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:45,457 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-17 22:08:45,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:45,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722434840] [2020-04-17 22:08:45,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:45,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722434840] [2020-04-17 22:08:45,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:45,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:45,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176949937] [2020-04-17 22:08:45,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:45,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:45,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:45,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:45,561 INFO L87 Difference]: Start difference. First operand 514 states and 1598 transitions. Second operand 5 states. [2020-04-17 22:08:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:45,610 INFO L93 Difference]: Finished difference Result 778 states and 2380 transitions. [2020-04-17 22:08:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:45,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:45,614 INFO L225 Difference]: With dead ends: 778 [2020-04-17 22:08:45,614 INFO L226 Difference]: Without dead ends: 418 [2020-04-17 22:08:45,615 INFO L678 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 [2020-04-17 22:08:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-17 22:08:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-04-17 22:08:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-04-17 22:08:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-04-17 22:08:45,630 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-04-17 22:08:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,630 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-04-17 22:08:45,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-04-17 22:08:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:45,631 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:45,632 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:45,632 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash -432648259, now seen corresponding path program 2 times [2020-04-17 22:08:45,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:45,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501116681] [2020-04-17 22:08:45,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:45,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501116681] [2020-04-17 22:08:45,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:45,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:45,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518010841] [2020-04-17 22:08:45,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:45,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:45,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:45,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:45,677 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 5 states. [2020-04-17 22:08:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:45,768 INFO L93 Difference]: Finished difference Result 766 states and 2228 transitions. [2020-04-17 22:08:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:08:45,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:45,772 INFO L225 Difference]: With dead ends: 766 [2020-04-17 22:08:45,773 INFO L226 Difference]: Without dead ends: 370 [2020-04-17 22:08:45,773 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 22:08:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-04-17 22:08:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-04-17 22:08:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-04-17 22:08:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-04-17 22:08:45,784 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-04-17 22:08:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,785 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-04-17 22:08:45,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-04-17 22:08:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:45,786 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:45,786 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:45,786 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:45,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:45,787 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-04-17 22:08:45,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:45,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055001994] [2020-04-17 22:08:45,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:45,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055001994] [2020-04-17 22:08:45,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:45,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:45,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243093233] [2020-04-17 22:08:45,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:45,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:45,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:45,848 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-04-17 22:08:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:45,885 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-04-17 22:08:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:45,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:45,887 INFO L225 Difference]: With dead ends: 454 [2020-04-17 22:08:45,887 INFO L226 Difference]: Without dead ends: 238 [2020-04-17 22:08:45,888 INFO L678 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 [2020-04-17 22:08:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-17 22:08:45,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-17 22:08:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-17 22:08:45,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-04-17 22:08:45,895 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-04-17 22:08:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,896 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-04-17 22:08:45,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-04-17 22:08:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:45,897 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:45,897 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:45,897 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:45,898 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-04-17 22:08:45,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:45,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42497474] [2020-04-17 22:08:45,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:45,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42497474] [2020-04-17 22:08:45,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:45,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:45,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319824315] [2020-04-17 22:08:45,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:45,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:45,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:45,955 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-04-17 22:08:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:45,989 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-04-17 22:08:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:45,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 22:08:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:45,992 INFO L225 Difference]: With dead ends: 283 [2020-04-17 22:08:45,992 INFO L226 Difference]: Without dead ends: 214 [2020-04-17 22:08:45,992 INFO L678 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 [2020-04-17 22:08:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-04-17 22:08:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-04-17 22:08:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-04-17 22:08:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-04-17 22:08:45,998 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-04-17 22:08:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:45,999 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-04-17 22:08:45,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-04-17 22:08:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:08:46,000 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:46,000 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:46,000 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:46,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:46,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-17 22:08:46,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:46,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917209777] [2020-04-17 22:08:46,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:46,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917209777] [2020-04-17 22:08:46,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:46,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:46,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549979160] [2020-04-17 22:08:46,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:46,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:46,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:46,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:46,040 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-04-17 22:08:46,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:46,084 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-04-17 22:08:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:08:46,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 22:08:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:46,087 INFO L225 Difference]: With dead ends: 211 [2020-04-17 22:08:46,087 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 22:08:46,087 INFO L678 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 [2020-04-17 22:08:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 22:08:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 22:08:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 22:08:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-04-17 22:08:46,092 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-04-17 22:08:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:46,093 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-04-17 22:08:46,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-04-17 22:08:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:08:46,094 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:46,094 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:46,094 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:46,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-17 22:08:46,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:46,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112218994] [2020-04-17 22:08:46,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:46,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112218994] [2020-04-17 22:08:46,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:46,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 22:08:46,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491498331] [2020-04-17 22:08:46,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:08:46,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:46,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:08:46,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:08:46,153 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-04-17 22:08:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:46,219 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-04-17 22:08:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:08:46,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-17 22:08:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:46,221 INFO L225 Difference]: With dead ends: 134 [2020-04-17 22:08:46,221 INFO L226 Difference]: Without dead ends: 95 [2020-04-17 22:08:46,221 INFO L678 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 [2020-04-17 22:08:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-04-17 22:08:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-04-17 22:08:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-04-17 22:08:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-04-17 22:08:46,224 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-04-17 22:08:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:46,225 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-04-17 22:08:46,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:08:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-04-17 22:08:46,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 22:08:46,225 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:46,226 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:46,226 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:46,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:46,226 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-17 22:08:46,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:46,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617806834] [2020-04-17 22:08:46,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:46,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617806834] [2020-04-17 22:08:46,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:46,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:46,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109329043] [2020-04-17 22:08:46,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:46,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:46,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:46,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:46,268 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-04-17 22:08:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:46,300 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-04-17 22:08:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:08:46,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-04-17 22:08:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:46,302 INFO L225 Difference]: With dead ends: 109 [2020-04-17 22:08:46,302 INFO L226 Difference]: Without dead ends: 93 [2020-04-17 22:08:46,302 INFO L678 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 [2020-04-17 22:08:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-17 22:08:46,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-04-17 22:08:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-04-17 22:08:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-04-17 22:08:46,305 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-04-17 22:08:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:46,306 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-04-17 22:08:46,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-04-17 22:08:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 22:08:46,306 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:46,307 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:46,307 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:46,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-04-17 22:08:46,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:46,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932198665] [2020-04-17 22:08:46,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:46,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932198665] [2020-04-17 22:08:46,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:46,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 22:08:46,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455272641] [2020-04-17 22:08:46,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 22:08:46,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 22:08:46,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:08:46,386 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-04-17 22:08:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:46,440 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-04-17 22:08:46,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:08:46,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-17 22:08:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:46,441 INFO L225 Difference]: With dead ends: 81 [2020-04-17 22:08:46,441 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:08:46,442 INFO L678 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 [2020-04-17 22:08:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:08:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:08:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:08:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:08:46,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-17 22:08:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:46,443 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:08:46,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 22:08:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:08:46,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:08:46,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:08:46 BasicIcfg [2020-04-17 22:08:46,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:08:46,452 INFO L168 Benchmark]: Toolchain (without parser) took 6137.84 ms. Allocated memory was 144.7 MB in the beginning and 285.7 MB in the end (delta: 141.0 MB). Free memory was 101.0 MB in the beginning and 140.0 MB in the end (delta: -39.0 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:46,453 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 144.7 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:08:46,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.16 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 99.0 MB in the beginning and 159.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:46,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.77 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:46,461 INFO L168 Benchmark]: Boogie Preprocessor took 30.29 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:46,462 INFO L168 Benchmark]: RCFGBuilder took 566.09 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 131.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:46,462 INFO L168 Benchmark]: TraceAbstraction took 4763.13 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 131.3 MB in the beginning and 140.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:46,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 144.7 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 705.16 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 99.0 MB in the beginning and 159.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.77 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.29 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 566.09 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 131.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4763.13 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 131.3 MB in the beginning and 140.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - 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: 4.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 381 SDtfs, 347 SDslu, 644 SDs, 0 SdLazy, 229 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 7936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...