/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:39:59,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:39:59,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:39:59,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:39:59,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:39:59,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:39:59,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:39:59,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:39:59,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:39:59,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:39:59,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:39:59,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:39:59,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:39:59,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:39:59,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:39:59,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:39:59,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:39:59,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:39:59,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:39:59,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:39:59,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:39:59,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:39:59,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:39:59,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:39:59,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:39:59,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:39:59,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:39:59,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:39:59,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:39:59,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:39:59,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:39:59,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:39:59,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:39:59,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:39:59,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:39:59,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:39:59,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:39:59,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:39:59,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:39:59,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:39:59,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:39:59,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:39:59,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:39:59,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:39:59,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:39:59,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:39:59,450 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:39:59,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:39:59,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:39:59,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:39:59,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:39:59,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:39:59,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:39:59,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:39:59,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:39:59,452 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:39:59,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:39:59,452 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:39:59,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:39:59,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:39:59,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:39:59,453 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:39:59,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:39:59,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:39:59,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:39:59,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:39:59,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:39:59,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:39:59,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:39:59,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:39:59,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:39:59,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:39:59,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:39:59,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:39:59,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:39:59,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:39:59,934 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:39:59,935 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-14 22:40:00,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c48f1e503/cd4ccc1ec83a4ae69afb87191061a6c7/FLAG46412c36c [2020-09-14 22:40:00,677 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:40:00,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-09-14 22:40:00,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c48f1e503/cd4ccc1ec83a4ae69afb87191061a6c7/FLAG46412c36c [2020-09-14 22:40:00,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c48f1e503/cd4ccc1ec83a4ae69afb87191061a6c7 [2020-09-14 22:40:00,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:40:00,887 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:40:00,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:40:00,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:40:00,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:40:00,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:40:00" (1/1) ... [2020-09-14 22:40:00,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397641c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:00, skipping insertion in model container [2020-09-14 22:40:00,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:40:00" (1/1) ... [2020-09-14 22:40:00,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:40:00,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:40:01,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:40:01,648 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:40:01,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:40:01,799 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:40:01,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01 WrapperNode [2020-09-14 22:40:01,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:40:01,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:40:01,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:40:01,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:40:01,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:40:01,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:40:01,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:40:01,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:40:01,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... [2020-09-14 22:40:01,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:40:01,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:40:01,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:40:01,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:40:01,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-14 22:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:40:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:40:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:40:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:40:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:40:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:40:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:40:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:40:01,989 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:40:02,489 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:40:02,490 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:40:02,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:40:02 BoogieIcfgContainer [2020-09-14 22:40:02,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:40:02,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:40:02,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:40:02,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:40:02,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:40:00" (1/3) ... [2020-09-14 22:40:02,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763ff740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:40:02, skipping insertion in model container [2020-09-14 22:40:02,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:40:01" (2/3) ... [2020-09-14 22:40:02,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763ff740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:40:02, skipping insertion in model container [2020-09-14 22:40:02,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:40:02" (3/3) ... [2020-09-14 22:40:02,505 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-09-14 22:40:02,516 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:40:02,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:40:02,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:40:02,527 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:40:02,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,559 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,564 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,574 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,587 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,587 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,588 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,589 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:40:02,626 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 22:40:02,649 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:40:02,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:40:02,650 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:40:02,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:40:02,650 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:40:02,650 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:40:02,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:40:02,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:40:02,673 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-14 22:40:02,676 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 22:40:02,738 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 22:40:02,738 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:40:02,746 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 46 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. [2020-09-14 22:40:02,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 22:40:02,789 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 22:40:02,789 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:40:02,790 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 46 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. [2020-09-14 22:40:02,791 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 22:40:02,793 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:40:04,613 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-14 22:40:04,613 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-14 22:40:04,619 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 22:40:04,647 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-14 22:40:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-14 22:40:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 22:40:04,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:04,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:04,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:04,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:04,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-14 22:40:04,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:04,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384044274] [2020-09-14 22:40:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:04,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384044274] [2020-09-14 22:40:04,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:04,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:40:04,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718754718] [2020-09-14 22:40:04,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:40:04,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:40:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:40:04,985 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-14 22:40:05,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:05,040 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-14 22:40:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:40:05,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 22:40:05,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:05,062 INFO L225 Difference]: With dead ends: 282 [2020-09-14 22:40:05,062 INFO L226 Difference]: Without dead ends: 218 [2020-09-14 22:40:05,064 INFO L675 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 [2020-09-14 22:40:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-14 22:40:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-14 22:40:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-14 22:40:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-14 22:40:05,142 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-14 22:40:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:05,143 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-14 22:40:05,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:40:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-14 22:40:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 22:40:05,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:05,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:05,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:40:05,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-14 22:40:05,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:05,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109659124] [2020-09-14 22:40:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:05,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109659124] [2020-09-14 22:40:05,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:05,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:40:05,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782715263] [2020-09-14 22:40:05,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:40:05,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:05,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:40:05,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:40:05,287 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-14 22:40:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:05,316 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-14 22:40:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:40:05,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 22:40:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:05,319 INFO L225 Difference]: With dead ends: 242 [2020-09-14 22:40:05,319 INFO L226 Difference]: Without dead ends: 116 [2020-09-14 22:40:05,320 INFO L675 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 [2020-09-14 22:40:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-14 22:40:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-14 22:40:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-14 22:40:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-14 22:40:05,331 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-14 22:40:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:05,332 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-14 22:40:05,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:40:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-14 22:40:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:40:05,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:05,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:05,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:40:05,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-14 22:40:05,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:05,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765546526] [2020-09-14 22:40:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:05,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765546526] [2020-09-14 22:40:05,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:05,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:40:05,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068024709] [2020-09-14 22:40:05,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:40:05,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:05,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:40:05,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:40:05,425 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-09-14 22:40:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:05,456 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-09-14 22:40:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:40:05,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:40:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:05,459 INFO L225 Difference]: With dead ends: 164 [2020-09-14 22:40:05,459 INFO L226 Difference]: Without dead ends: 92 [2020-09-14 22:40:05,459 INFO L675 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 [2020-09-14 22:40:05,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-14 22:40:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-14 22:40:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-14 22:40:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 214 transitions. [2020-09-14 22:40:05,468 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 214 transitions. Word has length 11 [2020-09-14 22:40:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:05,468 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 214 transitions. [2020-09-14 22:40:05,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:40:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 214 transitions. [2020-09-14 22:40:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:40:05,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:05,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:05,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:40:05,470 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:05,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:05,470 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-14 22:40:05,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:05,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18094814] [2020-09-14 22:40:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:05,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18094814] [2020-09-14 22:40:05,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:05,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:40:05,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026022617] [2020-09-14 22:40:05,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:40:05,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:05,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:40:05,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:40:05,579 INFO L87 Difference]: Start difference. First operand 92 states and 214 transitions. Second operand 4 states. [2020-09-14 22:40:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:05,618 INFO L93 Difference]: Finished difference Result 122 states and 275 transitions. [2020-09-14 22:40:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:40:05,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 22:40:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:05,620 INFO L225 Difference]: With dead ends: 122 [2020-09-14 22:40:05,620 INFO L226 Difference]: Without dead ends: 68 [2020-09-14 22:40:05,620 INFO L675 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 [2020-09-14 22:40:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-14 22:40:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-14 22:40:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-14 22:40:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-14 22:40:05,626 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-09-14 22:40:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:05,627 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-14 22:40:05,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:40:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-14 22:40:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:40:05,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:05,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:05,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:40:05,629 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:05,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-09-14 22:40:05,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:05,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277196675] [2020-09-14 22:40:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:05,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277196675] [2020-09-14 22:40:05,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:05,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:40:05,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021319638] [2020-09-14 22:40:05,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:40:05,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:05,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:40:05,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:40:05,735 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-14 22:40:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:05,776 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-14 22:40:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:40:05,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 22:40:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:05,777 INFO L225 Difference]: With dead ends: 81 [2020-09-14 22:40:05,778 INFO L226 Difference]: Without dead ends: 59 [2020-09-14 22:40:05,778 INFO L675 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 [2020-09-14 22:40:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-14 22:40:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-14 22:40:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-14 22:40:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-14 22:40:05,783 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-14 22:40:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:05,783 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-14 22:40:05,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:40:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-14 22:40:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:40:05,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:05,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:05,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:40:05,785 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:05,786 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-14 22:40:05,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:05,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458437646] [2020-09-14 22:40:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:05,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458437646] [2020-09-14 22:40:05,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:05,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:40:05,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870693609] [2020-09-14 22:40:05,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:40:05,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:05,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:40:05,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:40:05,928 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-14 22:40:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:05,986 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-14 22:40:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:40:05,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-14 22:40:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:05,988 INFO L225 Difference]: With dead ends: 60 [2020-09-14 22:40:05,988 INFO L226 Difference]: Without dead ends: 45 [2020-09-14 22:40:05,989 INFO L675 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 [2020-09-14 22:40:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-14 22:40:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-14 22:40:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-14 22:40:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-14 22:40:05,994 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-14 22:40:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:05,994 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-14 22:40:05,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:40:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-14 22:40:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:40:05,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:05,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:05,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:40:05,997 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-14 22:40:05,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:05,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420702923] [2020-09-14 22:40:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:06,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420702923] [2020-09-14 22:40:06,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:06,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:40:06,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247040961] [2020-09-14 22:40:06,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:40:06,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:06,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:40:06,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:40:06,134 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-14 22:40:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:06,197 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-14 22:40:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 22:40:06,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 22:40:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:06,198 INFO L225 Difference]: With dead ends: 42 [2020-09-14 22:40:06,198 INFO L226 Difference]: Without dead ends: 36 [2020-09-14 22:40:06,199 INFO L675 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 [2020-09-14 22:40:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-14 22:40:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-14 22:40:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-14 22:40:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-14 22:40:06,203 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-14 22:40:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:06,203 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-14 22:40:06,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:40:06,203 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-14 22:40:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 22:40:06,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:40:06,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:40:06,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:40:06,204 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:40:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:40:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-14 22:40:06,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:40:06,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731651835] [2020-09-14 22:40:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:40:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:40:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:40:06,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731651835] [2020-09-14 22:40:06,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:40:06,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:40:06,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215286903] [2020-09-14 22:40:06,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:40:06,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:40:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:40:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:40:06,259 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-14 22:40:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:40:06,273 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-14 22:40:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:40:06,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 22:40:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:40:06,273 INFO L225 Difference]: With dead ends: 35 [2020-09-14 22:40:06,273 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:40:06,274 INFO L675 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 [2020-09-14 22:40:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:40:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:40:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:40:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:40:06,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-14 22:40:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:40:06,275 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:40:06,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:40:06,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:40:06,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:40:06,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:40:06,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:40:06 BasicIcfg [2020-09-14 22:40:06,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:40:06,285 INFO L168 Benchmark]: Toolchain (without parser) took 5400.62 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 102.1 MB in the beginning and 142.1 MB in the end (delta: -40.0 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:40:06,286 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-14 22:40:06,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 913.21 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 161.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-14 22:40:06,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.58 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:40:06,288 INFO L168 Benchmark]: Boogie Preprocessor took 33.73 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:40:06,289 INFO L168 Benchmark]: RCFGBuilder took 600.68 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 135.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-14 22:40:06,290 INFO L168 Benchmark]: TraceAbstraction took 3784.34 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 134.5 MB in the beginning and 142.1 MB in the end (delta: -7.6 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:40:06,296 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 913.21 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 161.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.58 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.73 ms. Allocated memory is still 203.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 600.68 ms. Allocated memory is still 203.9 MB. Free memory was 157.9 MB in the beginning and 135.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3784.34 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 134.5 MB in the beginning and 142.1 MB in the end (delta: -7.6 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 670 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 173 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 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...