/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:54:46,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:54:46,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:54:46,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:54:46,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:54:46,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:54:46,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:54:46,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:54:46,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:54:46,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:54:46,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:54:46,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:54:46,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:54:46,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:54:46,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:54:46,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:54:46,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:54:46,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:54:46,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:54:46,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:54:46,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:54:46,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:54:46,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:54:46,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:54:46,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:54:46,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:54:46,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:54:46,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:54:46,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:54:46,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:54:46,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:54:46,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:54:46,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:54:46,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:54:46,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:54:46,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:54:46,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:54:46,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:54:46,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:54:46,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:54:46,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:54:46,403 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-NoLbe.epf [2020-04-18 06:54:46,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:54:46,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:54:46,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:54:46,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:54:46,419 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:54:46,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:54:46,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:54:46,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:54:46,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:54:46,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:54:46,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:54:46,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:54:46,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:54:46,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:54:46,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:54:46,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:54:46,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:54:46,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:54:46,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:54:46,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:54:46,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:54:46,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:54:46,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:54:46,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:54:46,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:54:46,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:54:46,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:54:46,423 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:54:46,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:54:46,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:54:46,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:54:46,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:54:46,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:54:46,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:54:46,710 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:54:46,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-18 06:54:46,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce340b7aa/1b484175373c4d75856a601470b13563/FLAG7540960cf [2020-04-18 06:54:47,350 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:54:47,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-18 06:54:47,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce340b7aa/1b484175373c4d75856a601470b13563/FLAG7540960cf [2020-04-18 06:54:47,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce340b7aa/1b484175373c4d75856a601470b13563 [2020-04-18 06:54:47,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:54:47,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:54:47,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:54:47,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:54:47,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:54:47,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:54:47" (1/1) ... [2020-04-18 06:54:47,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30593eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:47, skipping insertion in model container [2020-04-18 06:54:47,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:54:47" (1/1) ... [2020-04-18 06:54:47,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:54:47,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:54:48,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:54:48,315 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:54:48,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:54:48,465 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:54:48,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48 WrapperNode [2020-04-18 06:54:48,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:54:48,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:54:48,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:54:48,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:54:48,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:54:48,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:54:48,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:54:48,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:54:48,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (1/1) ... [2020-04-18 06:54:48,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:54:48,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:54:48,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:54:48,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:54:48,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (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 06:54:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:54:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:54:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:54:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:54:48,642 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:54:48,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:54:48,643 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:54:48,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:54:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:54:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:54:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:54:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:54:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:54:48,647 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 06:54:49,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:54:49,049 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:54:49,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:54:49 BoogieIcfgContainer [2020-04-18 06:54:49,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:54:49,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:54:49,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:54:49,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:54:49,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:54:47" (1/3) ... [2020-04-18 06:54:49,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3997bd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:54:49, skipping insertion in model container [2020-04-18 06:54:49,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:48" (2/3) ... [2020-04-18 06:54:49,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3997bd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:54:49, skipping insertion in model container [2020-04-18 06:54:49,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:54:49" (3/3) ... [2020-04-18 06:54:49,062 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-04-18 06:54:49,072 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:54:49,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:54:49,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:54:49,079 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:54:49,109 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,109 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,109 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,111 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,112 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,112 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,113 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,113 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,115 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,115 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,115 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,116 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,116 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,116 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,117 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,117 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,117 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,118 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,126 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,127 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,127 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,127 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,141 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,142 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,143 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,143 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,153 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,154 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,154 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,154 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:54:49,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:54:49,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:54:49,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:54:49,193 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:54:49,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:54:49,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:54:49,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:54:49,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:54:49,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:54:49,207 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 06:54:49,806 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 06:54:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 06:54:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 06:54:49,849 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:49,850 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:49,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-04-18 06:54:49,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:49,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684351163] [2020-04-18 06:54:49,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:50,402 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 06:54:50,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684351163] [2020-04-18 06:54:50,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:50,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:54:50,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050670710] [2020-04-18 06:54:50,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:54:50,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:50,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:54:50,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:54:50,428 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 06:54:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:51,028 INFO L93 Difference]: Finished difference Result 19772 states and 68248 transitions. [2020-04-18 06:54:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:54:51,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 06:54:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:51,124 INFO L225 Difference]: With dead ends: 19772 [2020-04-18 06:54:51,124 INFO L226 Difference]: Without dead ends: 6494 [2020-04-18 06:54:51,129 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:54:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-04-18 06:54:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 5372. [2020-04-18 06:54:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2020-04-18 06:54:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 18201 transitions. [2020-04-18 06:54:51,604 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 18201 transitions. Word has length 36 [2020-04-18 06:54:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:51,607 INFO L479 AbstractCegarLoop]: Abstraction has 5372 states and 18201 transitions. [2020-04-18 06:54:51,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:54:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 18201 transitions. [2020-04-18 06:54:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:54:51,621 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:51,622 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:51,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash -119523886, now seen corresponding path program 1 times [2020-04-18 06:54:51,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:51,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110282625] [2020-04-18 06:54:51,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:51,861 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 06:54:51,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110282625] [2020-04-18 06:54:51,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:51,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:54:51,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151944626] [2020-04-18 06:54:51,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:54:51,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:51,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:54:51,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:54:51,874 INFO L87 Difference]: Start difference. First operand 5372 states and 18201 transitions. Second operand 7 states. [2020-04-18 06:54:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:52,354 INFO L93 Difference]: Finished difference Result 7156 states and 23836 transitions. [2020-04-18 06:54:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:54:52,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 06:54:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:52,402 INFO L225 Difference]: With dead ends: 7156 [2020-04-18 06:54:52,403 INFO L226 Difference]: Without dead ends: 5744 [2020-04-18 06:54:52,415 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:54:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2020-04-18 06:54:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 4672. [2020-04-18 06:54:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2020-04-18 06:54:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 15711 transitions. [2020-04-18 06:54:52,694 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 15711 transitions. Word has length 38 [2020-04-18 06:54:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:52,696 INFO L479 AbstractCegarLoop]: Abstraction has 4672 states and 15711 transitions. [2020-04-18 06:54:52,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:54:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 15711 transitions. [2020-04-18 06:54:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 06:54:52,710 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:52,710 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:52,710 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1321324144, now seen corresponding path program 1 times [2020-04-18 06:54:52,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:52,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072978030] [2020-04-18 06:54:52,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:52,883 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 06:54:52,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072978030] [2020-04-18 06:54:52,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:52,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:54:52,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857773973] [2020-04-18 06:54:52,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:54:52,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:52,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:54:52,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:54:52,886 INFO L87 Difference]: Start difference. First operand 4672 states and 15711 transitions. Second operand 7 states. [2020-04-18 06:54:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:53,176 INFO L93 Difference]: Finished difference Result 6320 states and 20915 transitions. [2020-04-18 06:54:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:54:53,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 06:54:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:53,213 INFO L225 Difference]: With dead ends: 6320 [2020-04-18 06:54:53,214 INFO L226 Difference]: Without dead ends: 5216 [2020-04-18 06:54:53,214 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:54:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2020-04-18 06:54:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 4048. [2020-04-18 06:54:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4048 states. [2020-04-18 06:54:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 13587 transitions. [2020-04-18 06:54:53,372 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 13587 transitions. Word has length 39 [2020-04-18 06:54:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:53,373 INFO L479 AbstractCegarLoop]: Abstraction has 4048 states and 13587 transitions. [2020-04-18 06:54:53,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:54:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 13587 transitions. [2020-04-18 06:54:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:54:53,383 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:53,383 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:53,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash -609493549, now seen corresponding path program 1 times [2020-04-18 06:54:53,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:53,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464700003] [2020-04-18 06:54:53,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:53,567 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 06:54:53,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464700003] [2020-04-18 06:54:53,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:53,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:54:53,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177203370] [2020-04-18 06:54:53,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:54:53,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:53,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:54:53,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:54:53,570 INFO L87 Difference]: Start difference. First operand 4048 states and 13587 transitions. Second operand 7 states. [2020-04-18 06:54:54,229 WARN L192 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-04-18 06:54:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:54,372 INFO L93 Difference]: Finished difference Result 5906 states and 19445 transitions. [2020-04-18 06:54:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:54:54,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 06:54:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:54,404 INFO L225 Difference]: With dead ends: 5906 [2020-04-18 06:54:54,404 INFO L226 Difference]: Without dead ends: 4886 [2020-04-18 06:54:54,405 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:54:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2020-04-18 06:54:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 3593. [2020-04-18 06:54:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2020-04-18 06:54:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 11958 transitions. [2020-04-18 06:54:54,537 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 11958 transitions. Word has length 40 [2020-04-18 06:54:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:54,538 INFO L479 AbstractCegarLoop]: Abstraction has 3593 states and 11958 transitions. [2020-04-18 06:54:54,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:54:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 11958 transitions. [2020-04-18 06:54:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:54:54,548 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:54,548 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:54,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:54,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:54,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1411336305, now seen corresponding path program 1 times [2020-04-18 06:54:54,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:54,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599499470] [2020-04-18 06:54:54,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:54,698 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 06:54:54,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599499470] [2020-04-18 06:54:54,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:54,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:54:54,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742853999] [2020-04-18 06:54:54,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:54:54,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:54,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:54:54,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:54:54,700 INFO L87 Difference]: Start difference. First operand 3593 states and 11958 transitions. Second operand 6 states. [2020-04-18 06:54:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:54,833 INFO L93 Difference]: Finished difference Result 4656 states and 15237 transitions. [2020-04-18 06:54:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:54:54,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-04-18 06:54:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:54,845 INFO L225 Difference]: With dead ends: 4656 [2020-04-18 06:54:54,846 INFO L226 Difference]: Without dead ends: 3220 [2020-04-18 06:54:54,846 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:54:54,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-04-18 06:54:54,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3220. [2020-04-18 06:54:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2020-04-18 06:54:54,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 10471 transitions. [2020-04-18 06:54:54,931 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 10471 transitions. Word has length 41 [2020-04-18 06:54:54,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:54,932 INFO L479 AbstractCegarLoop]: Abstraction has 3220 states and 10471 transitions. [2020-04-18 06:54:54,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:54:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 10471 transitions. [2020-04-18 06:54:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 06:54:54,939 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:54,939 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:54,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:54,940 INFO L82 PathProgramCache]: Analyzing trace with hash 503157938, now seen corresponding path program 1 times [2020-04-18 06:54:54,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:54,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889100646] [2020-04-18 06:54:54,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:55,029 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 06:54:55,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889100646] [2020-04-18 06:54:55,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:55,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:54:55,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309392516] [2020-04-18 06:54:55,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:54:55,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:55,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:54:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:54:55,031 INFO L87 Difference]: Start difference. First operand 3220 states and 10471 transitions. Second operand 7 states. [2020-04-18 06:54:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:55,213 INFO L93 Difference]: Finished difference Result 3394 states and 10707 transitions. [2020-04-18 06:54:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:54:55,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-04-18 06:54:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:55,225 INFO L225 Difference]: With dead ends: 3394 [2020-04-18 06:54:55,226 INFO L226 Difference]: Without dead ends: 2218 [2020-04-18 06:54:55,227 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:54:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2020-04-18 06:54:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2218. [2020-04-18 06:54:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2020-04-18 06:54:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 6827 transitions. [2020-04-18 06:54:55,282 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 6827 transitions. Word has length 42 [2020-04-18 06:54:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:55,283 INFO L479 AbstractCegarLoop]: Abstraction has 2218 states and 6827 transitions. [2020-04-18 06:54:55,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:54:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 6827 transitions. [2020-04-18 06:54:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:54:55,288 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:55,288 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:55,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash 533348271, now seen corresponding path program 1 times [2020-04-18 06:54:55,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:55,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996751687] [2020-04-18 06:54:55,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:55,401 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 06:54:55,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996751687] [2020-04-18 06:54:55,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:55,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:54:55,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233898248] [2020-04-18 06:54:55,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:54:55,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:55,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:54:55,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:54:55,404 INFO L87 Difference]: Start difference. First operand 2218 states and 6827 transitions. Second operand 8 states. [2020-04-18 06:54:55,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:55,573 INFO L93 Difference]: Finished difference Result 1831 states and 5483 transitions. [2020-04-18 06:54:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:54:55,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-04-18 06:54:55,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:55,578 INFO L225 Difference]: With dead ends: 1831 [2020-04-18 06:54:55,578 INFO L226 Difference]: Without dead ends: 1159 [2020-04-18 06:54:55,578 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:54:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-04-18 06:54:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1127. [2020-04-18 06:54:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-04-18 06:54:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3262 transitions. [2020-04-18 06:54:55,610 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3262 transitions. Word has length 44 [2020-04-18 06:54:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:55,611 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 3262 transitions. [2020-04-18 06:54:55,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:54:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3262 transitions. [2020-04-18 06:54:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:54:55,614 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:55,614 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:55,614 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:55,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1559607833, now seen corresponding path program 1 times [2020-04-18 06:54:55,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:55,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790754429] [2020-04-18 06:54:55,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:55,726 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 06:54:55,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790754429] [2020-04-18 06:54:55,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:55,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:54:55,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058254448] [2020-04-18 06:54:55,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:54:55,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:55,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:54:55,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:54:55,729 INFO L87 Difference]: Start difference. First operand 1127 states and 3262 transitions. Second operand 7 states. [2020-04-18 06:54:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:55,812 INFO L93 Difference]: Finished difference Result 1618 states and 4701 transitions. [2020-04-18 06:54:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:54:55,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-04-18 06:54:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:55,815 INFO L225 Difference]: With dead ends: 1618 [2020-04-18 06:54:55,815 INFO L226 Difference]: Without dead ends: 677 [2020-04-18 06:54:55,815 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:54:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-04-18 06:54:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2020-04-18 06:54:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-04-18 06:54:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1917 transitions. [2020-04-18 06:54:55,830 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1917 transitions. Word has length 48 [2020-04-18 06:54:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:55,831 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 1917 transitions. [2020-04-18 06:54:55,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:54:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1917 transitions. [2020-04-18 06:54:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:54:55,832 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:55,833 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:55,833 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:55,833 INFO L82 PathProgramCache]: Analyzing trace with hash -155524805, now seen corresponding path program 2 times [2020-04-18 06:54:55,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:55,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272951738] [2020-04-18 06:54:55,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:55,969 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 06:54:55,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272951738] [2020-04-18 06:54:55,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:55,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:54:55,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583659270] [2020-04-18 06:54:55,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:54:55,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:55,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:54:55,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:54:55,974 INFO L87 Difference]: Start difference. First operand 677 states and 1917 transitions. Second operand 8 states. [2020-04-18 06:54:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:56,073 INFO L93 Difference]: Finished difference Result 1080 states and 3094 transitions. [2020-04-18 06:54:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:54:56,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-04-18 06:54:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:56,076 INFO L225 Difference]: With dead ends: 1080 [2020-04-18 06:54:56,076 INFO L226 Difference]: Without dead ends: 633 [2020-04-18 06:54:56,077 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:54:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-04-18 06:54:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2020-04-18 06:54:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-04-18 06:54:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1783 transitions. [2020-04-18 06:54:56,090 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1783 transitions. Word has length 48 [2020-04-18 06:54:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:56,091 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 1783 transitions. [2020-04-18 06:54:56,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:54:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1783 transitions. [2020-04-18 06:54:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:54:56,093 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:54:56,093 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:54:56,093 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:54:56,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:54:56,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1698442605, now seen corresponding path program 3 times [2020-04-18 06:54:56,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:54:56,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150301901] [2020-04-18 06:54:56,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:54:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:54:56,269 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 06:54:56,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150301901] [2020-04-18 06:54:56,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:54:56,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:54:56,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873429374] [2020-04-18 06:54:56,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:54:56,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:54:56,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:54:56,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:54:56,272 INFO L87 Difference]: Start difference. First operand 633 states and 1783 transitions. Second operand 8 states. [2020-04-18 06:54:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:54:56,349 INFO L93 Difference]: Finished difference Result 579 states and 1621 transitions. [2020-04-18 06:54:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:54:56,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-04-18 06:54:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:54:56,350 INFO L225 Difference]: With dead ends: 579 [2020-04-18 06:54:56,350 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:54:56,350 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:54:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:54:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:54:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:54:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:54:56,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 06:54:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:54:56,352 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:54:56,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:54:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:54:56,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:54:56,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:54:56 BasicIcfg [2020-04-18 06:54:56,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:54:56,362 INFO L168 Benchmark]: Toolchain (without parser) took 8690.49 ms. Allocated memory was 144.7 MB in the beginning and 477.1 MB in the end (delta: 332.4 MB). Free memory was 100.9 MB in the beginning and 178.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. [2020-04-18 06:54:56,363 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 06:54:56,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.30 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 98.9 MB in the beginning and 159.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 06:54:56,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 202.4 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:54:56,371 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:54:56,371 INFO L168 Benchmark]: RCFGBuilder took 489.13 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 06:54:56,376 INFO L168 Benchmark]: TraceAbstraction took 7304.43 ms. Allocated memory was 202.4 MB in the beginning and 477.1 MB in the end (delta: 274.7 MB). Free memory was 132.5 MB in the beginning and 178.1 MB in the end (delta: -45.6 MB). Peak memory consumption was 229.1 MB. Max. memory is 7.1 GB. [2020-04-18 06:54:56,384 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.30 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 98.9 MB in the beginning and 159.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.14 ms. Allocated memory is still 202.4 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.44 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.13 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7304.43 ms. Allocated memory was 202.4 MB in the beginning and 477.1 MB in the end (delta: 274.7 MB). Free memory was 132.5 MB in the beginning and 178.1 MB in the end (delta: -45.6 MB). Peak memory consumption was 229.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 7.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 965 SDtfs, 1498 SDslu, 3319 SDs, 0 SdLazy, 488 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 4687 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 424 NumberOfCodeBlocks, 424 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 414 ConstructedInterpolants, 0 QuantifiedInterpolants, 73564 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...