/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/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:20:59,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:20:59,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:20:59,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:20:59,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:20:59,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:20:59,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:20:59,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:20:59,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:20:59,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:20:59,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:20:59,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:20:59,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:20:59,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:20:59,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:20:59,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:20:59,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:20:59,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:20:59,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:20:59,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:20:59,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:20:59,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:20:59,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:20:59,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:20:59,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:20:59,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:20:59,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:20:59,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:20:59,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:20:59,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:20:59,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:20:59,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:20:59,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:20:59,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:20:59,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:20:59,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:20:59,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:20:59,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:20:59,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:20:59,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:20:59,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:20:59,387 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 02:20:59,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:20:59,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:20:59,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:20:59,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:20:59,424 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:20:59,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:20:59,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:20:59,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:20:59,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:20:59,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:20:59,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:20:59,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:20:59,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:20:59,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:20:59,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:20:59,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:20:59,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:20:59,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:20:59,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:20:59,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:20:59,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:20:59,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:20:59,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:20:59,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:20:59,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:20:59,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:20:59,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:20:59,430 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:20:59,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:20:59,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:20:59,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:20:59,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:20:59,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:20:59,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:20:59,734 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:20:59,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 02:20:59,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd831143/f97c2c00b1de48b5b51b12e205d4ca61/FLAG5244b826a [2020-04-18 02:21:00,391 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:21:00,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 02:21:00,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd831143/f97c2c00b1de48b5b51b12e205d4ca61/FLAG5244b826a [2020-04-18 02:21:00,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd831143/f97c2c00b1de48b5b51b12e205d4ca61 [2020-04-18 02:21:00,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:21:00,742 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:21:00,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:21:00,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:21:00,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:21:00,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:21:00" (1/1) ... [2020-04-18 02:21:00,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd6520b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:00, skipping insertion in model container [2020-04-18 02:21:00,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:21:00" (1/1) ... [2020-04-18 02:21:00,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:21:00,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:21:01,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:21:01,284 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:21:01,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:21:01,402 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:21:01,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01 WrapperNode [2020-04-18 02:21:01,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:21:01,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:21:01,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:21:01,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:21:01,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:21:01,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:21:01,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:21:01,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:21:01,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (1/1) ... [2020-04-18 02:21:01,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:21:01,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:21:01,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:21:01,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:21:01,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (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 02:21:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:21:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:21:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:21:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:21:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:21:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:21:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:21:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:21:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:21:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:21:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:21:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:21:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:21:01,545 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 02:21:01,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:21:01,910 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:21:01,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:21:01 BoogieIcfgContainer [2020-04-18 02:21:01,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:21:01,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:21:01,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:21:01,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:21:01,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:21:00" (1/3) ... [2020-04-18 02:21:01,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695d4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:21:01, skipping insertion in model container [2020-04-18 02:21:01,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:21:01" (2/3) ... [2020-04-18 02:21:01,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695d4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:21:01, skipping insertion in model container [2020-04-18 02:21:01,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:21:01" (3/3) ... [2020-04-18 02:21:01,923 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-04-18 02:21:01,931 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:21:01,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:21:01,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:21:01,938 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:21:01,962 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,963 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,963 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,963 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,964 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,964 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,965 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,965 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,965 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,966 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,966 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,966 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,967 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,967 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,967 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,967 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,968 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,968 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,972 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,973 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,973 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,973 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,979 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,980 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,980 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,980 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,988 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,988 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,988 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:01,989 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:21:02,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:21:02,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:21:02,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:21:02,025 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:21:02,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:21:02,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:21:02,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:21:02,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:21:02,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:21:02,041 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:21:02,043 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:21:02,086 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:21:02,087 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:21:02,092 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 02:21:02,095 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:21:02,119 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:21:02,119 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:21:02,121 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 02:21:02,124 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:21:02,128 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:21:03,661 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-18 02:21:03,814 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:21:03,883 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-04-18 02:21:03,884 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:21:03,888 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 02:21:03,915 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:21:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:21:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:21:03,926 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:03,927 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:03,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:03,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-04-18 02:21:03,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:03,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744348462] [2020-04-18 02:21:03,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:04,217 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 02:21:04,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744348462] [2020-04-18 02:21:04,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:04,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:21:04,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832419778] [2020-04-18 02:21:04,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:04,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:04,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:04,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:04,246 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:21:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:04,299 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:21:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:04,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:21:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:04,324 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:21:04,325 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:21:04,326 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 02:21:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:21:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:21:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:21:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:21:04,431 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:21:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:04,432 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:21:04,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:21:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:21:04,435 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:04,435 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:04,436 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:04,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:04,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-04-18 02:21:04,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:04,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577684840] [2020-04-18 02:21:04,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:04,526 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 02:21:04,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577684840] [2020-04-18 02:21:04,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:04,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:21:04,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873813257] [2020-04-18 02:21:04,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:04,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:04,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:04,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:04,530 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-04-18 02:21:04,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:04,547 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-04-18 02:21:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:04,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:21:04,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:04,550 INFO L225 Difference]: With dead ends: 214 [2020-04-18 02:21:04,551 INFO L226 Difference]: Without dead ends: 214 [2020-04-18 02:21:04,552 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 02:21:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-04-18 02:21:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-04-18 02:21:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-04-18 02:21:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-04-18 02:21:04,577 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-04-18 02:21:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:04,577 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-04-18 02:21:04,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-04-18 02:21:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:21:04,582 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:04,582 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:04,583 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-04-18 02:21:04,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:04,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672740293] [2020-04-18 02:21:04,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:04,653 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 02:21:04,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672740293] [2020-04-18 02:21:04,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:04,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:04,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905265975] [2020-04-18 02:21:04,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:04,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:04,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:04,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:04,657 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-04-18 02:21:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:04,683 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-04-18 02:21:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:21:04,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:21:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:04,685 INFO L225 Difference]: With dead ends: 240 [2020-04-18 02:21:04,685 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 02:21:04,686 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 02:21:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 02:21:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 02:21:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 02:21:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 02:21:04,696 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-04-18 02:21:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:04,697 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 02:21:04,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 02:21:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:21:04,698 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:04,698 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:04,699 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:04,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:04,699 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-04-18 02:21:04,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:04,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009474370] [2020-04-18 02:21:04,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:04,795 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 02:21:04,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009474370] [2020-04-18 02:21:04,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:04,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:04,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098522792] [2020-04-18 02:21:04,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:04,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:04,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:04,798 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-18 02:21:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:04,841 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 02:21:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:21:04,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:21:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:04,844 INFO L225 Difference]: With dead ends: 164 [2020-04-18 02:21:04,844 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 02:21:04,844 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 02:21:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 02:21:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 02:21:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 02:21:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 02:21:04,853 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 02:21:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:04,854 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 02:21:04,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:04,854 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 02:21:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:21:04,855 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:04,855 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:04,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:04,856 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-04-18 02:21:04,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:04,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873839949] [2020-04-18 02:21:04,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:04,945 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 02:21:04,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873839949] [2020-04-18 02:21:04,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:04,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:04,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803099597] [2020-04-18 02:21:04,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:21:04,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:04,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:21:04,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:21:04,948 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-18 02:21:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:05,003 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 02:21:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:21:05,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:21:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:05,005 INFO L225 Difference]: With dead ends: 122 [2020-04-18 02:21:05,020 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:21:05,021 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 02:21:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:21:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:21:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:21:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 02:21:05,026 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 02:21:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:05,026 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 02:21:05,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:21:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 02:21:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:21:05,027 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:05,028 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:05,028 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-04-18 02:21:05,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:05,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928711361] [2020-04-18 02:21:05,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:05,067 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 02:21:05,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928711361] [2020-04-18 02:21:05,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:05,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:21:05,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799652994] [2020-04-18 02:21:05,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:21:05,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:21:05,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:21:05,070 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-18 02:21:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:05,080 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 02:21:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:21:05,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:21:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:05,081 INFO L225 Difference]: With dead ends: 115 [2020-04-18 02:21:05,081 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 02:21:05,081 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 [2020-04-18 02:21:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 02:21:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 02:21:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 02:21:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 02:21:05,085 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 02:21:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:05,086 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 02:21:05,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:21:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 02:21:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:21:05,087 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:05,088 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:21:05,088 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-04-18 02:21:05,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:05,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505474697] [2020-04-18 02:21:05,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:05,180 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 02:21:05,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505474697] [2020-04-18 02:21:05,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:05,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:21:05,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335353901] [2020-04-18 02:21:05,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:21:05,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:05,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:21:05,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:21:05,182 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-04-18 02:21:05,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:05,237 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-04-18 02:21:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:21:05,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:21:05,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:05,238 INFO L225 Difference]: With dead ends: 92 [2020-04-18 02:21:05,239 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 02:21:05,239 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 02:21:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 02:21:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 02:21:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 02:21:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 02:21:05,241 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 02:21:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:05,242 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 02:21:05,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:21:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 02:21:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:21:05,243 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:21:05,243 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 02:21:05,243 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:21:05,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:21:05,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-04-18 02:21:05,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:21:05,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354884485] [2020-04-18 02:21:05,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:21:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:21:05,275 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 02:21:05,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354884485] [2020-04-18 02:21:05,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:21:05,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:21:05,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030061785] [2020-04-18 02:21:05,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:21:05,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:21:05,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:21:05,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:21:05,277 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-18 02:21:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:21:05,287 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 02:21:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:21:05,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:21:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:21:05,288 INFO L225 Difference]: With dead ends: 35 [2020-04-18 02:21:05,288 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:21:05,289 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 02:21:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:21:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:21:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:21:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:21:05,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:21:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:21:05,290 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:21:05,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:21:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:21:05,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:21:05,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:21:05 BasicIcfg [2020-04-18 02:21:05,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:21:05,296 INFO L168 Benchmark]: Toolchain (without parser) took 4569.94 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 100.6 MB in the beginning and 176.0 MB in the end (delta: -75.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:05,297 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:21:05,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.05 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 98.7 MB in the beginning and 160.1 MB in the end (delta: -61.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:05,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 157.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:05,300 INFO L168 Benchmark]: Boogie Preprocessor took 27.47 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:05,300 INFO L168 Benchmark]: RCFGBuilder took 432.28 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:21:05,301 INFO L168 Benchmark]: TraceAbstraction took 3378.61 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 134.0 MB in the beginning and 176.0 MB in the end (delta: -42.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:21:05,305 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.05 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 98.7 MB in the beginning and 160.1 MB in the end (delta: -61.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 157.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.47 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.28 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 134.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3378.61 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 134.0 MB in the beginning and 176.0 MB in the end (delta: -42.0 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: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 650 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 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: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 175 SDs, 0 SdLazy, 91 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 2 StatesRemovedByMinimization, 1 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, 2996 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...