/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:06:26,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:06:26,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:06:26,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:06:26,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:06:26,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:06:26,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:06:26,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:06:26,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:06:26,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:06:26,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:06:26,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:06:26,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:06:26,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:06:26,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:06:26,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:06:26,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:06:26,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:06:26,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:06:26,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:06:26,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:06:26,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:06:26,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:06:26,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:06:26,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:06:26,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:06:26,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:06:26,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:06:26,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:06:26,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:06:26,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:06:26,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:06:26,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:06:26,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:06:26,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:06:26,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:06:26,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:06:26,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:06:26,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:06:26,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:06:26,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:06:26,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 18:06:26,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:06:26,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:06:26,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:06:26,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:06:26,447 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:06:26,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:06:26,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:06:26,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:06:26,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:06:26,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:06:26,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:06:26,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:06:26,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:06:26,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:06:26,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:06:26,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:06:26,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:06:26,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:06:26,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:06:26,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:06:26,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:06:26,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:06:26,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:06:26,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:06:26,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:06:26,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:06:26,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:06:26,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:06:26,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:06:26,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:06:26,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:06:26,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:06:26,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:06:26,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:06:26,764 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:06:26,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-17 18:06:26,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4cbd9738/105ab8d18d454bf89bebc37d8eadf35a/FLAG3e7496642 [2020-04-17 18:06:27,322 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:06:27,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-17 18:06:27,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4cbd9738/105ab8d18d454bf89bebc37d8eadf35a/FLAG3e7496642 [2020-04-17 18:06:27,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4cbd9738/105ab8d18d454bf89bebc37d8eadf35a [2020-04-17 18:06:27,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:06:27,663 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:06:27,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:06:27,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:06:27,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:06:27,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:06:27" (1/1) ... [2020-04-17 18:06:27,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275aba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:27, skipping insertion in model container [2020-04-17 18:06:27,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:06:27" (1/1) ... [2020-04-17 18:06:27,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:06:27,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:06:28,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:06:28,211 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:06:28,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:06:28,340 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:06:28,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28 WrapperNode [2020-04-17 18:06:28,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:06:28,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:06:28,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:06:28,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:06:28,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:06:28,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:06:28,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:06:28,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:06:28,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (1/1) ... [2020-04-17 18:06:28,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:06:28,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:06:28,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:06:28,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:06:28,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (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 18:06:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:06:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:06:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:06:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:06:28,529 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:06:28,530 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:06:28,530 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:06:28,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:06:28,532 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 18:06:28,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 18:06:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:06:28,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:06:28,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:06:28,536 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 18:06:29,022 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:06:29,023 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:06:29,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:06:29 BoogieIcfgContainer [2020-04-17 18:06:29,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:06:29,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:06:29,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:06:29,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:06:29,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:06:27" (1/3) ... [2020-04-17 18:06:29,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b30db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:06:29, skipping insertion in model container [2020-04-17 18:06:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:06:28" (2/3) ... [2020-04-17 18:06:29,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b30db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:06:29, skipping insertion in model container [2020-04-17 18:06:29,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:06:29" (3/3) ... [2020-04-17 18:06:29,047 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-04-17 18:06:29,055 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:06:29,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:06:29,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:06:29,064 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:06:29,090 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,091 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,091 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,092 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,092 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,092 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,093 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,093 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,094 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,094 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,094 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,094 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,095 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,095 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,095 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,096 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,096 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,096 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,100 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,101 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,101 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,102 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,107 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,108 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,108 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,108 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,113 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,113 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,113 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,114 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:06:29,129 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:06:29,147 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:06:29,147 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:06:29,147 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:06:29,147 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:06:29,147 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:06:29,148 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:06:29,148 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:06:29,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:06:29,164 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 18:06:29,166 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 18:06:29,212 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 18:06:29,213 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:06:29,220 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 18:06:29,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 18:06:29,255 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 18:06:29,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:06:29,256 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 18:06:29,258 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 18:06:29,259 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:06:29,487 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-04-17 18:06:31,226 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-17 18:06:31,227 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 18:06:31,231 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 18:06:31,261 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 18:06:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 18:06:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:06:31,271 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:31,272 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:06:31,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:31,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-17 18:06:31,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:31,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627473295] [2020-04-17 18:06:31,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:31,492 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 18:06:31,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627473295] [2020-04-17 18:06:31,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:31,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:06:31,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214268598] [2020-04-17 18:06:31,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:06:31,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:31,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:06:31,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:06:31,518 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 18:06:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:31,581 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 18:06:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:06:31,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:06:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:31,614 INFO L225 Difference]: With dead ends: 282 [2020-04-17 18:06:31,614 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 18:06:31,616 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:06:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 18:06:31,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 18:06:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 18:06:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 18:06:31,711 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 18:06:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:31,712 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 18:06:31,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:06:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 18:06:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:06:31,714 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:31,714 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:06:31,714 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:31,715 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-17 18:06:31,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:31,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880480692] [2020-04-17 18:06:31,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:31,777 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 18:06:31,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880480692] [2020-04-17 18:06:31,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:31,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:06:31,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497595506] [2020-04-17 18:06:31,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:06:31,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:31,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:06:31,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:06:31,782 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-04-17 18:06:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:31,808 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 18:06:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:06:31,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:06:31,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:31,816 INFO L225 Difference]: With dead ends: 202 [2020-04-17 18:06:31,816 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 18:06:31,818 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:06:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 18:06:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 18:06:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 18:06:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 18:06:31,836 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 18:06:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:31,836 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 18:06:31,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:06:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 18:06:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:06:31,838 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:31,838 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:06:31,839 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:31,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-04-17 18:06:31,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:31,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583960375] [2020-04-17 18:06:31,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:31,913 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 18:06:31,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583960375] [2020-04-17 18:06:31,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:31,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:06:31,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120634691] [2020-04-17 18:06:31,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:06:31,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:31,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:06:31,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:06:31,915 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 18:06:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:31,930 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-17 18:06:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:06:31,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 18:06:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:31,934 INFO L225 Difference]: With dead ends: 194 [2020-04-17 18:06:31,934 INFO L226 Difference]: Without dead ends: 194 [2020-04-17 18:06:31,934 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:06:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-17 18:06:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-17 18:06:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-17 18:06:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-17 18:06:31,947 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-17 18:06:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:31,947 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-17 18:06:31,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:06:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-17 18:06:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:06:31,949 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:31,949 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:06:31,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-17 18:06:31,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:31,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117064672] [2020-04-17 18:06:31,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:32,070 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 18:06:32,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117064672] [2020-04-17 18:06:32,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:32,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:06:32,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310849826] [2020-04-17 18:06:32,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:06:32,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:32,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:06:32,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:06:32,073 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-04-17 18:06:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:32,116 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-04-17 18:06:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:06:32,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 18:06:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:32,123 INFO L225 Difference]: With dead ends: 225 [2020-04-17 18:06:32,123 INFO L226 Difference]: Without dead ends: 161 [2020-04-17 18:06:32,123 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 18:06:32,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-04-17 18:06:32,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-04-17 18:06:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-04-17 18:06:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-04-17 18:06:32,131 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-04-17 18:06:32,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:32,132 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-04-17 18:06:32,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:06:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-04-17 18:06:32,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:06:32,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:32,133 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:06:32,134 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:32,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:32,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-17 18:06:32,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:32,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379690460] [2020-04-17 18:06:32,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:32,233 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 18:06:32,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379690460] [2020-04-17 18:06:32,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:32,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:06:32,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375328450] [2020-04-17 18:06:32,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:06:32,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:32,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:06:32,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:06:32,236 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-04-17 18:06:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:32,292 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-04-17 18:06:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:06:32,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 18:06:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:32,294 INFO L225 Difference]: With dead ends: 160 [2020-04-17 18:06:32,294 INFO L226 Difference]: Without dead ends: 123 [2020-04-17 18:06:32,294 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 18:06:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-04-17 18:06:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-04-17 18:06:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-04-17 18:06:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-04-17 18:06:32,321 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-04-17 18:06:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:32,322 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-04-17 18:06:32,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:06:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-04-17 18:06:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:06:32,326 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:32,327 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:06:32,327 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-17 18:06:32,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:32,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297421600] [2020-04-17 18:06:32,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:32,453 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 18:06:32,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297421600] [2020-04-17 18:06:32,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:32,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:06:32,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021060338] [2020-04-17 18:06:32,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:06:32,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:32,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:06:32,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:06:32,455 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-04-17 18:06:32,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:32,528 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-17 18:06:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 18:06:32,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 18:06:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:32,530 INFO L225 Difference]: With dead ends: 118 [2020-04-17 18:06:32,530 INFO L226 Difference]: Without dead ends: 108 [2020-04-17 18:06:32,530 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 18:06:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-17 18:06:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-17 18:06:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-17 18:06:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-17 18:06:32,535 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-17 18:06:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:32,535 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-17 18:06:32,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:06:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-17 18:06:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:06:32,536 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:32,536 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 18:06:32,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:32,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-17 18:06:32,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:32,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745342091] [2020-04-17 18:06:32,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:32,573 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 18:06:32,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745342091] [2020-04-17 18:06:32,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:32,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:06:32,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654506239] [2020-04-17 18:06:32,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:06:32,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:32,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:06:32,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:06:32,575 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-04-17 18:06:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:32,589 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-04-17 18:06:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:06:32,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:06:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:32,590 INFO L225 Difference]: With dead ends: 133 [2020-04-17 18:06:32,590 INFO L226 Difference]: Without dead ends: 54 [2020-04-17 18:06:32,591 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 18:06:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-17 18:06:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-17 18:06:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-17 18:06:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-04-17 18:06:32,593 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-04-17 18:06:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:32,594 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-04-17 18:06:32,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:06:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-04-17 18:06:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:06:32,595 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:32,595 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 18:06:32,595 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:32,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-04-17 18:06:32,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:32,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328488248] [2020-04-17 18:06:32,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:32,627 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 18:06:32,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328488248] [2020-04-17 18:06:32,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:32,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:06:32,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882622541] [2020-04-17 18:06:32,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:06:32,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:32,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:06:32,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:06:32,630 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-04-17 18:06:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:32,648 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-04-17 18:06:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:06:32,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:06:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:32,650 INFO L225 Difference]: With dead ends: 63 [2020-04-17 18:06:32,650 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 18:06:32,650 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 18:06:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 18:06:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 18:06:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 18:06:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-04-17 18:06:32,652 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-04-17 18:06:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:32,653 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-04-17 18:06:32,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:06:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-04-17 18:06:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:06:32,654 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:32,654 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 18:06:32,654 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:32,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:32,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-04-17 18:06:32,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:32,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487775116] [2020-04-17 18:06:32,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:32,687 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 18:06:32,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487775116] [2020-04-17 18:06:32,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:32,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:06:32,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810205961] [2020-04-17 18:06:32,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:06:32,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:32,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:06:32,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:06:32,690 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-04-17 18:06:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:32,709 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-04-17 18:06:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:06:32,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:06:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:32,710 INFO L225 Difference]: With dead ends: 51 [2020-04-17 18:06:32,710 INFO L226 Difference]: Without dead ends: 30 [2020-04-17 18:06:32,711 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 18:06:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-04-17 18:06:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-04-17 18:06:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-17 18:06:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-04-17 18:06:32,713 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-04-17 18:06:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:32,713 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-04-17 18:06:32,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:06:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-04-17 18:06:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:06:32,714 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:06:32,714 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 18:06:32,714 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:06:32,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:06:32,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 4 times [2020-04-17 18:06:32,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:06:32,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799771372] [2020-04-17 18:06:32,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:06:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:06:32,748 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 18:06:32,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799771372] [2020-04-17 18:06:32,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:06:32,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:06:32,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136835729] [2020-04-17 18:06:32,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:06:32,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:06:32,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:06:32,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:06:32,750 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-04-17 18:06:32,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:06:32,762 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-04-17 18:06:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:06:32,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:06:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:06:32,763 INFO L225 Difference]: With dead ends: 29 [2020-04-17 18:06:32,763 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:06:32,764 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 18:06:32,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:06:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:06:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:06:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:06:32,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 18:06:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:06:32,765 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:06:32,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:06:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:06:32,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:06:32,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:06:32 BasicIcfg [2020-04-17 18:06:32,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:06:32,772 INFO L168 Benchmark]: Toolchain (without parser) took 5127.44 ms. Allocated memory was 143.7 MB in the beginning and 251.7 MB in the end (delta: 108.0 MB). Free memory was 100.0 MB in the beginning and 157.1 MB in the end (delta: -57.1 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-04-17 18:06:32,773 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 18:06:32,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.71 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 98.1 MB in the beginning and 157.1 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:06:32,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.93 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:06:32,775 INFO L168 Benchmark]: Boogie Preprocessor took 49.83 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:06:32,776 INFO L168 Benchmark]: RCFGBuilder took 581.29 ms. Allocated memory is still 200.8 MB. Free memory was 153.6 MB in the beginning and 131.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:06:32,777 INFO L168 Benchmark]: TraceAbstraction took 3738.16 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 131.4 MB in the beginning and 157.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:06:32,781 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 676.71 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 98.1 MB in the beginning and 157.1 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.93 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.83 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 581.29 ms. Allocated memory is still 200.8 MB. Free memory was 153.6 MB in the beginning and 131.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3738.16 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 131.4 MB in the beginning and 157.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 206 SDtfs, 144 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...