/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:37:54,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:37:54,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:37:54,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:37:54,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:37:54,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:37:54,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:37:54,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:37:54,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:37:54,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:37:54,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:37:54,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:37:54,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:37:54,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:37:54,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:37:54,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:37:54,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:37:54,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:37:54,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:37:54,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:37:54,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:37:54,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:37:54,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:37:54,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:37:54,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:37:54,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:37:54,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:37:54,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:37:54,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:37:54,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:37:54,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:37:54,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:37:54,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:37:54,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:37:54,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:37:54,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:37:54,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:37:54,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:37:54,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:37:54,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:37:54,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:37:54,352 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-VariableLbe.epf [2020-04-18 02:37:54,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:37:54,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:37:54,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:37:54,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:37:54,376 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:37:54,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:37:54,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:37:54,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:37:54,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:37:54,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:37:54,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:37:54,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:37:54,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:37:54,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:37:54,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:37:54,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:37:54,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:37:54,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:37:54,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:37:54,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:37:54,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:37:54,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:37:54,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:37:54,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:37:54,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:37:54,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:37:54,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:37:54,382 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:37:54,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:37:54,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:37:54,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:37:54,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:37:54,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:37:54,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:37:54,694 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:37:54,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-18 02:37:54,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e466a37e4/7d7e67a0de94409980a2dd2519bacfc8/FLAG6754d1fb5 [2020-04-18 02:37:55,264 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:37:55,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-18 02:37:55,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e466a37e4/7d7e67a0de94409980a2dd2519bacfc8/FLAG6754d1fb5 [2020-04-18 02:37:55,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e466a37e4/7d7e67a0de94409980a2dd2519bacfc8 [2020-04-18 02:37:55,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:37:55,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:37:55,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:37:55,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:37:55,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:37:55,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:37:55" (1/1) ... [2020-04-18 02:37:55,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46699f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:55, skipping insertion in model container [2020-04-18 02:37:55,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:37:55" (1/1) ... [2020-04-18 02:37:55,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:37:55,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:37:56,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:37:56,416 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:37:56,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:37:56,562 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:37:56,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56 WrapperNode [2020-04-18 02:37:56,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:37:56,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:37:56,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:37:56,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:37:56,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:37:56,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:37:56,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:37:56,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:37:56,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (1/1) ... [2020-04-18 02:37:56,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:37:56,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:37:56,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:37:56,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:37:56,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (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 [2020-04-18 02:37:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:37:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:37:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:37:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:37:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:37:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:37:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:37:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:37:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:37:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:37:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:37:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:37:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:37:56,737 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:37:57,108 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:37:57,109 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:37:57,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:37:57 BoogieIcfgContainer [2020-04-18 02:37:57,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:37:57,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:37:57,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:37:57,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:37:57,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:37:55" (1/3) ... [2020-04-18 02:37:57,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcfd42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:37:57, skipping insertion in model container [2020-04-18 02:37:57,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:37:56" (2/3) ... [2020-04-18 02:37:57,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcfd42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:37:57, skipping insertion in model container [2020-04-18 02:37:57,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:37:57" (3/3) ... [2020-04-18 02:37:57,123 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-04-18 02:37:57,131 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:37:57,131 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:37:57,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:37:57,139 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:37:57,163 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,164 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,164 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,165 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,165 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,166 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,166 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,166 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,166 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,167 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,167 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,168 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,168 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,168 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,169 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,169 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,173 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,174 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,174 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,174 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,180 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,180 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,180 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,183 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,183 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,184 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,184 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:37:57,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:37:57,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:37:57,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:37:57,221 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:37:57,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:37:57,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:37:57,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:37:57,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:37:57,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:37:57,237 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:37:57,239 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:37:57,282 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:37:57,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:37:57,287 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. [2020-04-18 02:37:57,290 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:37:57,312 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:37:57,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:37:57,313 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. [2020-04-18 02:37:57,315 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:37:57,316 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:37:58,717 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-18 02:37:58,903 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 02:37:58,904 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:37:58,907 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:37:58,936 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:37:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:37:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:37:58,951 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:37:58,952 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:37:58,952 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:37:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:37:58,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 02:37:58,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:37:58,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118645378] [2020-04-18 02:37:58,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:37:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:37:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:37:59,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118645378] [2020-04-18 02:37:59,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:37:59,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:37:59,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003962705] [2020-04-18 02:37:59,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:37:59,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:37:59,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:37:59,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:37:59,179 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:37:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:37:59,228 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:37:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:37:59,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:37:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:37:59,245 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:37:59,245 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:37:59,247 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 [2020-04-18 02:37:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:37:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:37:59,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:37:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:37:59,320 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:37:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:37:59,321 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:37:59,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:37:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:37:59,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:37:59,323 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:37:59,323 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:37:59,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:37:59,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:37:59,324 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 1 times [2020-04-18 02:37:59,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:37:59,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450333370] [2020-04-18 02:37:59,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:37:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:37:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:37:59,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450333370] [2020-04-18 02:37:59,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:37:59,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:37:59,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555981298] [2020-04-18 02:37:59,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:37:59,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:37:59,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:37:59,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:37:59,440 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:37:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:37:59,471 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 02:37:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:37:59,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:37:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:37:59,475 INFO L225 Difference]: With dead ends: 278 [2020-04-18 02:37:59,475 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 02:37:59,476 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 [2020-04-18 02:37:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 02:37:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 02:37:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 02:37:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 02:37:59,491 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 02:37:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:37:59,492 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 02:37:59,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:37:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 02:37:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:37:59,493 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:37:59,493 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:37:59,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:37:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:37:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 1 times [2020-04-18 02:37:59,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:37:59,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960310949] [2020-04-18 02:37:59,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:37:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:37:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:37:59,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960310949] [2020-04-18 02:37:59,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:37:59,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:37:59,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581265219] [2020-04-18 02:37:59,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:37:59,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:37:59,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:37:59,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:37:59,605 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-04-18 02:37:59,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:37:59,645 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 02:37:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:37:59,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:37:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:37:59,652 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:37:59,652 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 02:37:59,653 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:37:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 02:37:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 02:37:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 02:37:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 02:37:59,671 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 02:37:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:37:59,672 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 02:37:59,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:37:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 02:37:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:37:59,673 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:37:59,673 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:37:59,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:37:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:37:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-18 02:37:59,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:37:59,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959555324] [2020-04-18 02:37:59,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:37:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:37:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:37:59,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959555324] [2020-04-18 02:37:59,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:37:59,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:37:59,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324306810] [2020-04-18 02:37:59,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:37:59,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:37:59,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:37:59,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:37:59,747 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 02:37:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:37:59,806 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-04-18 02:37:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:37:59,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:37:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:37:59,810 INFO L225 Difference]: With dead ends: 165 [2020-04-18 02:37:59,810 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 02:37:59,811 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 [2020-04-18 02:37:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 02:37:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 02:37:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 02:37:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-04-18 02:37:59,817 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-04-18 02:37:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:37:59,818 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-04-18 02:37:59,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:37:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-04-18 02:37:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:37:59,819 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:37:59,819 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:37:59,820 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:37:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:37:59,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-18 02:37:59,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:37:59,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551077004] [2020-04-18 02:37:59,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:37:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:37:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:37:59,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551077004] [2020-04-18 02:37:59,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:37:59,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:37:59,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522666295] [2020-04-18 02:37:59,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:37:59,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:37:59,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:37:59,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:37:59,872 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-04-18 02:37:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:37:59,915 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:37:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:37:59,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:37:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:37:59,917 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:37:59,917 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:37:59,918 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 [2020-04-18 02:37:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:37:59,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:37:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:37:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:37:59,924 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-04-18 02:37:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:37:59,925 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:37:59,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:37:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:37:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:37:59,926 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:37:59,926 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:37:59,927 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:37:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:37:59,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-18 02:37:59,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:37:59,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126998185] [2020-04-18 02:37:59,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:37:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:37:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:37:59,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126998185] [2020-04-18 02:37:59,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:37:59,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:37:59,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883374883] [2020-04-18 02:37:59,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:37:59,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:37:59,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:37:59,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:37:59,995 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-04-18 02:38:00,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:00,044 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-04-18 02:38:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:38:00,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 02:38:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:00,046 INFO L225 Difference]: With dead ends: 92 [2020-04-18 02:38:00,046 INFO L226 Difference]: Without dead ends: 84 [2020-04-18 02:38:00,046 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 [2020-04-18 02:38:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-18 02:38:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-04-18 02:38:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-18 02:38:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-04-18 02:38:00,051 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-04-18 02:38:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:00,051 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-04-18 02:38:00,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:38:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-04-18 02:38:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:38:00,053 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:00,053 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:00,053 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:00,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 02:38:00,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:00,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509027586] [2020-04-18 02:38:00,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:00,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509027586] [2020-04-18 02:38:00,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:00,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:38:00,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401668874] [2020-04-18 02:38:00,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:38:00,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:00,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:38:00,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:38:00,097 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-04-18 02:38:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:00,130 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-04-18 02:38:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:38:00,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:38:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:00,131 INFO L225 Difference]: With dead ends: 97 [2020-04-18 02:38:00,131 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:38:00,132 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 [2020-04-18 02:38:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:38:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:38:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:38:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 02:38:00,134 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-04-18 02:38:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:00,134 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 02:38:00,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:38:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 02:38:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:38:00,135 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:38:00,135 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:38:00,135 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:38:00,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:38:00,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-04-18 02:38:00,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:38:00,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160630771] [2020-04-18 02:38:00,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:38:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:38:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:38:00,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160630771] [2020-04-18 02:38:00,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:38:00,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:38:00,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410027766] [2020-04-18 02:38:00,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:38:00,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:38:00,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:38:00,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:38:00,194 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-18 02:38:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:38:00,210 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 02:38:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:38:00,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:38:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:38:00,210 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:38:00,211 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:38:00,211 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 [2020-04-18 02:38:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:38:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:38:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:38:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:38:00,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:38:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:38:00,213 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:38:00,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:38:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:38:00,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:38:00,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:38:00 BasicIcfg [2020-04-18 02:38:00,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:38:00,218 INFO L168 Benchmark]: Toolchain (without parser) took 4578.55 ms. Allocated memory was 143.1 MB in the beginning and 248.5 MB in the end (delta: 105.4 MB). Free memory was 100.4 MB in the beginning and 204.3 MB in the end (delta: -103.9 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:00,219 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:38:00,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 901.53 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 98.4 MB in the beginning and 156.8 MB in the end (delta: -58.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:00,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.49 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:00,225 INFO L168 Benchmark]: Boogie Preprocessor took 24.52 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 153.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:00,225 INFO L168 Benchmark]: RCFGBuilder took 453.44 ms. Allocated memory is still 201.9 MB. Free memory was 153.2 MB in the beginning and 131.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:38:00,226 INFO L168 Benchmark]: TraceAbstraction took 3102.31 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 130.3 MB in the beginning and 204.3 MB in the end (delta: -74.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:38:00,237 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 901.53 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 98.4 MB in the beginning and 156.8 MB in the end (delta: -58.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.49 ms. Allocated memory is still 201.9 MB. Free memory was 156.8 MB in the beginning and 154.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.52 ms. Allocated memory is still 201.9 MB. Free memory was 154.7 MB in the beginning and 153.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.44 ms. Allocated memory is still 201.9 MB. Free memory was 153.2 MB in the beginning and 131.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3102.31 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 130.3 MB in the beginning and 204.3 MB in the end (delta: -74.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 160 SDtfs, 154 SDslu, 222 SDs, 0 SdLazy, 117 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...