/usr/bin/java -Xmx16000000000 -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-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:44:00,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:44:00,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:44:00,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:44:00,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:44:00,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:44:00,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:44:00,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:44:00,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:44:00,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:44:00,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:44:00,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:44:00,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:44:00,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:44:00,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:44:00,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:44:00,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:44:00,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:44:00,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:44:00,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:44:00,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:44:00,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:44:00,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:44:00,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:44:00,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:44:00,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:44:00,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:44:00,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:44:00,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:44:00,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:44:00,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:44:00,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:44:00,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:44:00,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:44:00,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:44:00,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:44:00,628 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-PN-SemanticLbe.epf [2020-10-16 01:44:00,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:44:00,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:44:00,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:44:00,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:44:00,676 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:44:00,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:44:00,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:44:00,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:44:00,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:44:00,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:44:00,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:44:00,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:44:00,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:44:00,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:44:00,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:44:00,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:44:00,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:44:00,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:44:00,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:44:00,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:44:00,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:44:00,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:44:00,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:44:00,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:44:00,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:44:00,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:44:00,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:44:00,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:44:00,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:44:00,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:44:00,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:44:00,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:44:00,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:44:00,982 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:44:00,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-10-16 01:44:01,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a6600c8/c3a1f4c8d01443489741720a6f56c1ee/FLAG628d1b5c0 [2020-10-16 01:44:01,646 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:44:01,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-10-16 01:44:01,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a6600c8/c3a1f4c8d01443489741720a6f56c1ee/FLAG628d1b5c0 [2020-10-16 01:44:01,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a6600c8/c3a1f4c8d01443489741720a6f56c1ee [2020-10-16 01:44:01,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:44:01,931 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:44:01,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:01,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:44:01,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:44:01,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:01" (1/1) ... [2020-10-16 01:44:01,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2458d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:01, skipping insertion in model container [2020-10-16 01:44:01,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:01" (1/1) ... [2020-10-16 01:44:01,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:44:01,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:44:02,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:02,546 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:44:02,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:02,679 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:44:02,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02 WrapperNode [2020-10-16 01:44:02,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:02,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:02,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:44:02,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:44:02,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:02,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:44:02,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:44:02,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:44:02,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (1/1) ... [2020-10-16 01:44:02,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:44:02,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:44:02,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:44:02,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:44:02,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (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 [2020-10-16 01:44:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:44:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:44:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:44:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:44:02,829 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:44:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:44:02,830 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:44:02,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:44:02,831 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:44:02,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:44:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:44:02,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:44:02,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:44:02,834 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:44:03,231 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:44:03,231 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:44:03,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:03 BoogieIcfgContainer [2020-10-16 01:44:03,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:44:03,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:44:03,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:44:03,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:44:03,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:44:01" (1/3) ... [2020-10-16 01:44:03,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c44f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:03, skipping insertion in model container [2020-10-16 01:44:03,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:02" (2/3) ... [2020-10-16 01:44:03,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c44f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:03, skipping insertion in model container [2020-10-16 01:44:03,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:03" (3/3) ... [2020-10-16 01:44:03,244 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-10-16 01:44:03,256 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:44:03,265 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:44:03,266 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:44:03,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,297 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,297 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,298 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,298 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,301 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,313 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:03,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:44:03,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:44:03,360 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:44:03,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:44:03,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:44:03,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:44:03,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:44:03,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:44:03,361 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:44:03,376 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:44:03,422 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 01:44:03,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:03,428 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:44:03,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:44:03,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:03,438 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:44:03,441 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:03,444 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:03,445 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:03,463 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-16 01:44:03,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:03,464 INFO L80 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-16 01:44:03,466 INFO L117 LiptonReduction]: Number of co-enabled transitions 804 [2020-10-16 01:44:04,758 INFO L132 LiptonReduction]: Checked pairs total: 1445 [2020-10-16 01:44:04,759 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:44:04,762 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1327 [2020-10-16 01:44:04,770 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:44:04,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:04,770 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:04,772 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:04,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:04,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1855988377, now seen corresponding path program 1 times [2020-10-16 01:44:04,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:04,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515946872] [2020-10-16 01:44:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:05,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515946872] [2020-10-16 01:44:05,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:05,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:44:05,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305486545] [2020-10-16 01:44:05,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:44:05,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:05,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:44:05,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:44:05,052 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2020-10-16 01:44:05,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:44:05,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:05,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2020-10-16 01:44:05,056 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:05,091 INFO L129 PetriNetUnfolder]: 12/42 cut-off events. [2020-10-16 01:44:05,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:05,092 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 42 events. 12/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 107 event pairs, 2 based on Foata normal form. 8/47 useless extension candidates. Maximal degree in co-relation 69. Up to 25 conditions per place. [2020-10-16 01:44:05,094 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 5 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:44:05,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 63 flow [2020-10-16 01:44:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:44:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:44:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2020-10-16 01:44:05,111 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8515151515151516 [2020-10-16 01:44:05,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2020-10-16 01:44:05,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2020-10-16 01:44:05,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:05,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2020-10-16 01:44:05,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:44:05,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:44:05,130 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:44:05,132 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 281 transitions. [2020-10-16 01:44:05,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 63 flow [2020-10-16 01:44:05,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:44:05,139 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2020-10-16 01:44:05,142 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 01:44:05,143 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 01:44:05,143 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2020-10-16 01:44:05,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:44:05,144 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:05,144 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:05,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:44:05,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:05,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:05,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1701065286, now seen corresponding path program 1 times [2020-10-16 01:44:05,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:05,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891798870] [2020-10-16 01:44:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:05,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891798870] [2020-10-16 01:44:05,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:05,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:44:05,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274606764] [2020-10-16 01:44:05,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:44:05,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:05,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:44:05,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:44:05,225 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 110 [2020-10-16 01:44:05,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states. [2020-10-16 01:44:05,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:05,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 110 [2020-10-16 01:44:05,226 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:05,238 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:44:05,238 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 01:44:05,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 24 events. 3/24 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2020-10-16 01:44:05,239 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 1 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2020-10-16 01:44:05,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 63 flow [2020-10-16 01:44:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:44:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:44:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 01:44:05,242 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8393939393939394 [2020-10-16 01:44:05,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 01:44:05,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 01:44:05,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:05,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 01:44:05,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:44:05,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:44:05,246 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:44:05,246 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 277 transitions. [2020-10-16 01:44:05,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 63 flow [2020-10-16 01:44:05,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:44:05,248 INFO L241 Difference]: Finished difference. Result has 28 places, 18 transitions, 62 flow [2020-10-16 01:44:05,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2020-10-16 01:44:05,249 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2020-10-16 01:44:05,249 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 62 flow [2020-10-16 01:44:05,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:44:05,249 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:05,250 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:05,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:44:05,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:05,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:05,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1193417040, now seen corresponding path program 1 times [2020-10-16 01:44:05,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:05,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482624945] [2020-10-16 01:44:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:05,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482624945] [2020-10-16 01:44:05,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:05,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:05,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196465088] [2020-10-16 01:44:05,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:05,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:05,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:05,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:05,424 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 110 [2020-10-16 01:44:05,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 62 flow. Second operand 4 states. [2020-10-16 01:44:05,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:05,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 110 [2020-10-16 01:44:05,425 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:05,490 INFO L129 PetriNetUnfolder]: 41/94 cut-off events. [2020-10-16 01:44:05,490 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2020-10-16 01:44:05,491 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 94 events. 41/94 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 355 event pairs, 17 based on Foata normal form. 10/93 useless extension candidates. Maximal degree in co-relation 209. Up to 60 conditions per place. [2020-10-16 01:44:05,492 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 7 selfloop transitions, 7 changer transitions 2/28 dead transitions. [2020-10-16 01:44:05,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 114 flow [2020-10-16 01:44:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:44:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:44:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2020-10-16 01:44:05,496 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2020-10-16 01:44:05,496 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2020-10-16 01:44:05,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2020-10-16 01:44:05,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:05,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2020-10-16 01:44:05,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:44:05,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:44:05,515 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:44:05,515 INFO L185 Difference]: Start difference. First operand has 28 places, 18 transitions, 62 flow. Second operand 5 states and 403 transitions. [2020-10-16 01:44:05,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 114 flow [2020-10-16 01:44:05,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:05,517 INFO L241 Difference]: Finished difference. Result has 33 places, 24 transitions, 112 flow [2020-10-16 01:44:05,518 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2020-10-16 01:44:05,518 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2020-10-16 01:44:05,518 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 112 flow [2020-10-16 01:44:05,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:05,518 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:05,519 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:05,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:44:05,519 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:05,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1644011429, now seen corresponding path program 1 times [2020-10-16 01:44:05,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:05,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000984136] [2020-10-16 01:44:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:05,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000984136] [2020-10-16 01:44:05,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:05,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:05,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554035484] [2020-10-16 01:44:05,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:05,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:05,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:05,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:05,564 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 110 [2020-10-16 01:44:05,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 112 flow. Second operand 4 states. [2020-10-16 01:44:05,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:05,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 110 [2020-10-16 01:44:05,565 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:05,623 INFO L129 PetriNetUnfolder]: 68/164 cut-off events. [2020-10-16 01:44:05,623 INFO L130 PetriNetUnfolder]: For 347/389 co-relation queries the response was YES. [2020-10-16 01:44:05,625 INFO L80 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 164 events. 68/164 cut-off events. For 347/389 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 791 event pairs, 24 based on Foata normal form. 24/176 useless extension candidates. Maximal degree in co-relation 490. Up to 113 conditions per place. [2020-10-16 01:44:05,627 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 5 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-10-16 01:44:05,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 143 flow [2020-10-16 01:44:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 01:44:05,629 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7977272727272727 [2020-10-16 01:44:05,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 01:44:05,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 01:44:05,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:05,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 01:44:05,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:05,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:05,632 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:05,632 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 112 flow. Second operand 4 states and 351 transitions. [2020-10-16 01:44:05,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 143 flow [2020-10-16 01:44:05,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:44:05,637 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 121 flow [2020-10-16 01:44:05,638 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2020-10-16 01:44:05,638 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2020-10-16 01:44:05,638 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 121 flow [2020-10-16 01:44:05,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:05,638 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:05,638 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:05,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:44:05,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:05,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:05,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1228459905, now seen corresponding path program 2 times [2020-10-16 01:44:05,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:05,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734448926] [2020-10-16 01:44:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:05,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734448926] [2020-10-16 01:44:05,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:05,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:05,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443970852] [2020-10-16 01:44:05,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:44:05,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:05,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:44:05,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:44:05,720 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 110 [2020-10-16 01:44:05,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 121 flow. Second operand 5 states. [2020-10-16 01:44:05,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:05,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 110 [2020-10-16 01:44:05,721 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:05,789 INFO L129 PetriNetUnfolder]: 25/80 cut-off events. [2020-10-16 01:44:05,790 INFO L130 PetriNetUnfolder]: For 265/341 co-relation queries the response was YES. [2020-10-16 01:44:05,791 INFO L80 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 80 events. 25/80 cut-off events. For 265/341 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 300 event pairs, 3 based on Foata normal form. 39/114 useless extension candidates. Maximal degree in co-relation 288. Up to 54 conditions per place. [2020-10-16 01:44:05,792 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 13 changer transitions 4/34 dead transitions. [2020-10-16 01:44:05,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 223 flow [2020-10-16 01:44:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:44:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:44:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 563 transitions. [2020-10-16 01:44:05,795 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7311688311688311 [2020-10-16 01:44:05,795 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 563 transitions. [2020-10-16 01:44:05,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 563 transitions. [2020-10-16 01:44:05,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:05,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 563 transitions. [2020-10-16 01:44:05,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:44:05,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:44:05,799 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:44:05,799 INFO L185 Difference]: Start difference. First operand has 36 places, 24 transitions, 121 flow. Second operand 7 states and 563 transitions. [2020-10-16 01:44:05,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 223 flow [2020-10-16 01:44:05,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 213 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:44:05,803 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 199 flow [2020-10-16 01:44:05,803 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2020-10-16 01:44:05,803 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2020-10-16 01:44:05,803 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 199 flow [2020-10-16 01:44:05,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:44:05,804 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:05,804 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:05,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:44:05,804 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:05,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:05,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1540905504, now seen corresponding path program 1 times [2020-10-16 01:44:05,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:05,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848685750] [2020-10-16 01:44:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:05,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848685750] [2020-10-16 01:44:05,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:05,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:44:05,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383957180] [2020-10-16 01:44:05,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:44:05,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:05,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:44:05,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:44:05,892 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 110 [2020-10-16 01:44:05,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 199 flow. Second operand 6 states. [2020-10-16 01:44:05,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:05,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 110 [2020-10-16 01:44:05,893 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:05,984 INFO L129 PetriNetUnfolder]: 13/62 cut-off events. [2020-10-16 01:44:05,984 INFO L130 PetriNetUnfolder]: For 323/422 co-relation queries the response was YES. [2020-10-16 01:44:05,985 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 62 events. 13/62 cut-off events. For 323/422 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 228 event pairs, 0 based on Foata normal form. 50/108 useless extension candidates. Maximal degree in co-relation 275. Up to 43 conditions per place. [2020-10-16 01:44:05,986 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 2 selfloop transitions, 17 changer transitions 3/34 dead transitions. [2020-10-16 01:44:05,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 275 flow [2020-10-16 01:44:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 01:44:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-16 01:44:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 717 transitions. [2020-10-16 01:44:05,989 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7242424242424242 [2020-10-16 01:44:05,990 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 717 transitions. [2020-10-16 01:44:05,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 717 transitions. [2020-10-16 01:44:05,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:05,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 717 transitions. [2020-10-16 01:44:05,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-16 01:44:05,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-16 01:44:05,994 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-16 01:44:05,994 INFO L185 Difference]: Start difference. First operand has 42 places, 30 transitions, 199 flow. Second operand 9 states and 717 transitions. [2020-10-16 01:44:05,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 275 flow [2020-10-16 01:44:05,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 245 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:05,998 INFO L241 Difference]: Finished difference. Result has 51 places, 31 transitions, 225 flow [2020-10-16 01:44:05,999 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2020-10-16 01:44:05,999 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2020-10-16 01:44:05,999 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 225 flow [2020-10-16 01:44:05,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:44:05,999 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:06,000 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:06,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:44:06,000 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:06,000 INFO L82 PathProgramCache]: Analyzing trace with hash 994316829, now seen corresponding path program 1 times [2020-10-16 01:44:06,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:06,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648846020] [2020-10-16 01:44:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:06,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:06,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648846020] [2020-10-16 01:44:06,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:06,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:06,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390613265] [2020-10-16 01:44:06,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:06,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:06,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:06,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:06,070 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 110 [2020-10-16 01:44:06,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 225 flow. Second operand 4 states. [2020-10-16 01:44:06,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:06,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 110 [2020-10-16 01:44:06,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:06,132 INFO L129 PetriNetUnfolder]: 28/126 cut-off events. [2020-10-16 01:44:06,132 INFO L130 PetriNetUnfolder]: For 613/666 co-relation queries the response was YES. [2020-10-16 01:44:06,133 INFO L80 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 126 events. 28/126 cut-off events. For 613/666 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 712 event pairs, 0 based on Foata normal form. 12/130 useless extension candidates. Maximal degree in co-relation 518. Up to 55 conditions per place. [2020-10-16 01:44:06,133 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 3 selfloop transitions, 2 changer transitions 11/33 dead transitions. [2020-10-16 01:44:06,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 33 transitions, 251 flow [2020-10-16 01:44:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:44:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:44:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2020-10-16 01:44:06,136 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7927272727272727 [2020-10-16 01:44:06,136 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2020-10-16 01:44:06,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2020-10-16 01:44:06,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:06,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2020-10-16 01:44:06,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:44:06,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:44:06,139 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:44:06,139 INFO L185 Difference]: Start difference. First operand has 51 places, 31 transitions, 225 flow. Second operand 5 states and 436 transitions. [2020-10-16 01:44:06,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 33 transitions, 251 flow [2020-10-16 01:44:06,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 193 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-16 01:44:06,144 INFO L241 Difference]: Finished difference. Result has 49 places, 22 transitions, 124 flow [2020-10-16 01:44:06,144 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=22} [2020-10-16 01:44:06,144 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2020-10-16 01:44:06,145 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 22 transitions, 124 flow [2020-10-16 01:44:06,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:06,145 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:06,145 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:06,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:44:06,145 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash 286853173, now seen corresponding path program 2 times [2020-10-16 01:44:06,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:06,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653634700] [2020-10-16 01:44:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:06,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653634700] [2020-10-16 01:44:06,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:06,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:06,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036578955] [2020-10-16 01:44:06,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:06,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:06,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:06,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:06,182 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 110 [2020-10-16 01:44:06,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 22 transitions, 124 flow. Second operand 4 states. [2020-10-16 01:44:06,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:06,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 110 [2020-10-16 01:44:06,182 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:06,194 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-10-16 01:44:06,195 INFO L130 PetriNetUnfolder]: For 64/67 co-relation queries the response was YES. [2020-10-16 01:44:06,195 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 24 events. 5/24 cut-off events. For 64/67 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-16 01:44:06,195 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2020-10-16 01:44:06,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 21 transitions, 110 flow [2020-10-16 01:44:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2020-10-16 01:44:06,197 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-10-16 01:44:06,197 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2020-10-16 01:44:06,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2020-10-16 01:44:06,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:06,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2020-10-16 01:44:06,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:06,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:06,200 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:06,200 INFO L185 Difference]: Start difference. First operand has 49 places, 22 transitions, 124 flow. Second operand 4 states and 352 transitions. [2020-10-16 01:44:06,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 21 transitions, 110 flow [2020-10-16 01:44:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 21 transitions, 100 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 01:44:06,201 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2020-10-16 01:44:06,201 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2020-10-16 01:44:06,201 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2020-10-16 01:44:06,202 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2020-10-16 01:44:06,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:06,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:44:06,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:44:06 BasicIcfg [2020-10-16 01:44:06,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:44:06,209 INFO L168 Benchmark]: Toolchain (without parser) took 4277.74 ms. Allocated memory was 252.2 MB in the beginning and 374.3 MB in the end (delta: 122.2 MB). Free memory was 207.3 MB in the beginning and 235.1 MB in the end (delta: -27.7 MB). Peak memory consumption was 94.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:06,209 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:44:06,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.65 ms. Allocated memory was 252.2 MB in the beginning and 319.8 MB in the end (delta: 67.6 MB). Free memory was 207.3 MB in the beginning and 272.4 MB in the end (delta: -65.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:06,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.59 ms. Allocated memory is still 319.8 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:44:06,212 INFO L168 Benchmark]: Boogie Preprocessor took 28.65 ms. Allocated memory is still 319.8 MB. Free memory was 272.4 MB in the beginning and 269.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:06,213 INFO L168 Benchmark]: RCFGBuilder took 470.57 ms. Allocated memory is still 319.8 MB. Free memory was 269.9 MB in the beginning and 247.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:06,214 INFO L168 Benchmark]: TraceAbstraction took 2970.62 ms. Allocated memory was 319.8 MB in the beginning and 374.3 MB in the end (delta: 54.5 MB). Free memory was 247.8 MB in the beginning and 235.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 67.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:06,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 749.65 ms. Allocated memory was 252.2 MB in the beginning and 319.8 MB in the end (delta: 67.6 MB). Free memory was 207.3 MB in the beginning and 272.4 MB in the end (delta: -65.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.59 ms. Allocated memory is still 319.8 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.65 ms. Allocated memory is still 319.8 MB. Free memory was 272.4 MB in the beginning and 269.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 470.57 ms. Allocated memory is still 319.8 MB. Free memory was 269.9 MB in the beginning and 247.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2970.62 ms. Allocated memory was 319.8 MB in the beginning and 374.3 MB in the end (delta: 54.5 MB). Free memory was 247.8 MB in the beginning and 235.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 67.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 554 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 63 PlacesBefore, 26 PlacesAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1445 MoverChecksTotal - 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, 67 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 28 SDtfs, 17 SDslu, 15 SDs, 0 SdLazy, 105 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2822 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...