/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/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:46:33,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:46:33,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:46:33,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:46:33,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:46:33,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:46:33,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:46:33,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:46:33,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:46:33,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:46:33,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:46:33,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:46:33,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:46:33,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:46:33,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:46:33,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:46:33,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:46:33,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:46:33,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:46:33,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:46:33,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:46:33,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:46:33,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:46:33,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:46:33,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:46:33,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:46:33,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:46:33,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:46:33,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:46:33,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:46:33,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:46:33,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:46:33,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:46:33,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:46:33,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:46:33,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:46:33,107 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 01:46:33,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:46:33,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:46:33,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:46:33,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:46:33,148 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:46:33,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:46:33,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:46:33,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:46:33,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:46:33,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:46:33,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:46:33,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:46:33,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:46:33,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:46:33,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:46:33,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:46:33,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:46:33,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:46:33,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:46:33,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:46:33,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:46:33,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:46:33,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:46:33,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:46:33,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:46:33,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:46:33,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:46:33,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:46:33,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:46:33,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:46:33,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:46:33,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:46:33,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:46:33,480 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:46:33,481 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-10-16 01:46:33,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177354f5a/5895491549824068b113dfca8a2079c3/FLAG38eba8a18 [2020-10-16 01:46:34,009 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:46:34,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-10-16 01:46:34,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177354f5a/5895491549824068b113dfca8a2079c3/FLAG38eba8a18 [2020-10-16 01:46:34,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177354f5a/5895491549824068b113dfca8a2079c3 [2020-10-16 01:46:34,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:46:34,370 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:46:34,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:34,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:46:34,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:46:34,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:34" (1/1) ... [2020-10-16 01:46:34,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4b4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:34, skipping insertion in model container [2020-10-16 01:46:34,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:34" (1/1) ... [2020-10-16 01:46:34,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:46:34,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:46:34,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:34,909 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:46:34,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:35,057 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:46:35,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35 WrapperNode [2020-10-16 01:46:35,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:35,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:35,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:46:35,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:46:35,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:35,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:46:35,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:46:35,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:46:35,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (1/1) ... [2020-10-16 01:46:35,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:46:35,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:46:35,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:46:35,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:46:35,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (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 01:46:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:46:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:46:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:46:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:46:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:46:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:46:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:46:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:46:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:46:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:46:35,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:46:35,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:46:35,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:46:35,197 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 01:46:35,544 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:46:35,544 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:46:35,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:35 BoogieIcfgContainer [2020-10-16 01:46:35,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:46:35,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:46:35,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:46:35,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:46:35,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:46:34" (1/3) ... [2020-10-16 01:46:35,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c51d62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:35, skipping insertion in model container [2020-10-16 01:46:35,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:35" (2/3) ... [2020-10-16 01:46:35,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c51d62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:35, skipping insertion in model container [2020-10-16 01:46:35,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:35" (3/3) ... [2020-10-16 01:46:35,553 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-10-16 01:46:35,561 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:46:35,567 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:46:35,568 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:46:35,603 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,604 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,604 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,608 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,609 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,611 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,611 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,612 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,620 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,632 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,633 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,633 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:35,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:46:35,672 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:46:35,672 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:46:35,672 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:46:35,672 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:46:35,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:46:35,673 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:46:35,673 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:46:35,673 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:46:35,685 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:46:35,728 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:46:35,728 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:35,733 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 49 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. [2020-10-16 01:46:35,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:46:35,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:35,741 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:46:35,743 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:35,746 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:35,747 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:46:35,767 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:46:35,767 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:35,768 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 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. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:46:35,772 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:46:36,962 INFO L132 LiptonReduction]: Checked pairs total: 1810 [2020-10-16 01:46:36,962 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 01:46:36,965 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1226 [2020-10-16 01:46:36,973 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:46:36,974 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:36,974 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:36,975 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:36,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:36,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:36,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1532819962, now seen corresponding path program 1 times [2020-10-16 01:46:36,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:36,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016664354] [2020-10-16 01:46:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:37,151 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 01:46:37,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016664354] [2020-10-16 01:46:37,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:37,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:37,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317406523] [2020-10-16 01:46:37,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:46:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:37,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:46:37,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:46:37,184 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 113 [2020-10-16 01:46:37,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states. [2020-10-16 01:46:37,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:37,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 113 [2020-10-16 01:46:37,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:37,201 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:46:37,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:37,202 INFO L80 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 01:46:37,203 INFO L132 encePairwiseOnDemand]: 112/113 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2020-10-16 01:46:37,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2020-10-16 01:46:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:46:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:46:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2020-10-16 01:46:37,219 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9513274336283186 [2020-10-16 01:46:37,220 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 215 transitions. [2020-10-16 01:46:37,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 215 transitions. [2020-10-16 01:46:37,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:37,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 215 transitions. [2020-10-16 01:46:37,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:46:37,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:46:37,239 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:46:37,241 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 215 transitions. [2020-10-16 01:46:37,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2020-10-16 01:46:37,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:46:37,246 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2020-10-16 01:46:37,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2020-10-16 01:46:37,249 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2020-10-16 01:46:37,249 INFO L481 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2020-10-16 01:46:37,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:46:37,250 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:37,250 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:37,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:46:37,251 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:37,251 INFO L82 PathProgramCache]: Analyzing trace with hash 272778124, now seen corresponding path program 1 times [2020-10-16 01:46:37,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:37,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263461010] [2020-10-16 01:46:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:37,353 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 01:46:37,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263461010] [2020-10-16 01:46:37,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:37,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:37,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298424337] [2020-10-16 01:46:37,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:37,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:37,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:37,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:37,358 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2020-10-16 01:46:37,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 01:46:37,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:37,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2020-10-16 01:46:37,359 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:37,376 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 01:46:37,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:37,377 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2020-10-16 01:46:37,377 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:46:37,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 56 flow [2020-10-16 01:46:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2020-10-16 01:46:37,381 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8702064896755162 [2020-10-16 01:46:37,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2020-10-16 01:46:37,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2020-10-16 01:46:37,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:37,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2020-10-16 01:46:37,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:37,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:37,385 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:37,386 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 295 transitions. [2020-10-16 01:46:37,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 56 flow [2020-10-16 01:46:37,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:46:37,388 INFO L241 Difference]: Finished difference. Result has 28 places, 19 transitions, 59 flow [2020-10-16 01:46:37,388 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2020-10-16 01:46:37,389 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:46:37,389 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 59 flow [2020-10-16 01:46:37,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:37,389 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:37,389 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:37,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:46:37,390 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:37,390 INFO L82 PathProgramCache]: Analyzing trace with hash -133813314, now seen corresponding path program 1 times [2020-10-16 01:46:37,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:37,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70680268] [2020-10-16 01:46:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:37,534 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 01:46:37,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70680268] [2020-10-16 01:46:37,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:37,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:37,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591640132] [2020-10-16 01:46:37,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:37,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:37,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:37,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:37,541 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 113 [2020-10-16 01:46:37,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 59 flow. Second operand 4 states. [2020-10-16 01:46:37,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:37,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 113 [2020-10-16 01:46:37,542 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:37,619 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 01:46:37,619 INFO L130 PetriNetUnfolder]: For 15/20 co-relation queries the response was YES. [2020-10-16 01:46:37,620 INFO L80 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 96 events. 42/96 cut-off events. For 15/20 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 366 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 205. Up to 61 conditions per place. [2020-10-16 01:46:37,621 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 01:46:37,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 111 flow [2020-10-16 01:46:37,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:46:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:46:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2020-10-16 01:46:37,625 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7752212389380531 [2020-10-16 01:46:37,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2020-10-16 01:46:37,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2020-10-16 01:46:37,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:37,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2020-10-16 01:46:37,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:46:37,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:46:37,630 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:46:37,630 INFO L185 Difference]: Start difference. First operand has 28 places, 19 transitions, 59 flow. Second operand 5 states and 438 transitions. [2020-10-16 01:46:37,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 111 flow [2020-10-16 01:46:37,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:37,632 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 110 flow [2020-10-16 01:46:37,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2020-10-16 01:46:37,633 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:46:37,633 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 110 flow [2020-10-16 01:46:37,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:37,633 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:37,634 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:37,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:46:37,634 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1303269589, now seen corresponding path program 1 times [2020-10-16 01:46:37,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:37,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127891338] [2020-10-16 01:46:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:37,706 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 01:46:37,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127891338] [2020-10-16 01:46:37,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:37,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:37,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696862188] [2020-10-16 01:46:37,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:46:37,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:37,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:46:37,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:46:37,711 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 113 [2020-10-16 01:46:37,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 110 flow. Second operand 5 states. [2020-10-16 01:46:37,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:37,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 113 [2020-10-16 01:46:37,712 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:37,804 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 01:46:37,804 INFO L130 PetriNetUnfolder]: For 115/148 co-relation queries the response was YES. [2020-10-16 01:46:37,805 INFO L80 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 76 events. 25/76 cut-off events. For 115/148 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 266 event pairs, 3 based on Foata normal form. 31/103 useless extension candidates. Maximal degree in co-relation 268. Up to 52 conditions per place. [2020-10-16 01:46:37,806 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 01:46:37,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 212 flow [2020-10-16 01:46:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:46:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:46:37,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2020-10-16 01:46:37,809 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7737041719342604 [2020-10-16 01:46:37,809 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2020-10-16 01:46:37,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2020-10-16 01:46:37,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:37,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2020-10-16 01:46:37,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:46:37,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:46:37,813 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:46:37,814 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 110 flow. Second operand 7 states and 612 transitions. [2020-10-16 01:46:37,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 212 flow [2020-10-16 01:46:37,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:37,817 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 194 flow [2020-10-16 01:46:37,817 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2020-10-16 01:46:37,818 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 01:46:37,818 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 194 flow [2020-10-16 01:46:37,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:46:37,818 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:37,818 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:37,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:46:37,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash -626420579, now seen corresponding path program 1 times [2020-10-16 01:46:37,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:37,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570549407] [2020-10-16 01:46:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:37,931 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 01:46:37,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570549407] [2020-10-16 01:46:37,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:37,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:46:37,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520957568] [2020-10-16 01:46:37,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:46:37,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:46:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:46:37,935 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 113 [2020-10-16 01:46:37,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 194 flow. Second operand 6 states. [2020-10-16 01:46:37,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:37,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 113 [2020-10-16 01:46:37,936 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:38,020 INFO L129 PetriNetUnfolder]: 13/58 cut-off events. [2020-10-16 01:46:38,020 INFO L130 PetriNetUnfolder]: For 238/274 co-relation queries the response was YES. [2020-10-16 01:46:38,021 INFO L80 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 58 events. 13/58 cut-off events. For 238/274 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 194 event pairs, 0 based on Foata normal form. 29/84 useless extension candidates. Maximal degree in co-relation 263. Up to 41 conditions per place. [2020-10-16 01:46:38,022 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 2 selfloop transitions, 17 changer transitions 3/35 dead transitions. [2020-10-16 01:46:38,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 270 flow [2020-10-16 01:46:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 01:46:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-16 01:46:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 780 transitions. [2020-10-16 01:46:38,025 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7669616519174042 [2020-10-16 01:46:38,025 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 780 transitions. [2020-10-16 01:46:38,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 780 transitions. [2020-10-16 01:46:38,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:38,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 780 transitions. [2020-10-16 01:46:38,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-16 01:46:38,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-16 01:46:38,030 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-16 01:46:38,030 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 194 flow. Second operand 9 states and 780 transitions. [2020-10-16 01:46:38,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 270 flow [2020-10-16 01:46:38,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 240 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:38,035 INFO L241 Difference]: Finished difference. Result has 51 places, 32 transitions, 220 flow [2020-10-16 01:46:38,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=220, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2020-10-16 01:46:38,035 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2020-10-16 01:46:38,035 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 220 flow [2020-10-16 01:46:38,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:46:38,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:38,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:38,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:46:38,036 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:38,036 INFO L82 PathProgramCache]: Analyzing trace with hash -72143901, now seen corresponding path program 1 times [2020-10-16 01:46:38,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:38,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325376945] [2020-10-16 01:46:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:38,063 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 01:46:38,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325376945] [2020-10-16 01:46:38,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:38,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:38,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584140] [2020-10-16 01:46:38,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:38,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:38,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:38,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:38,067 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2020-10-16 01:46:38,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 220 flow. Second operand 3 states. [2020-10-16 01:46:38,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:38,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2020-10-16 01:46:38,067 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:38,085 INFO L129 PetriNetUnfolder]: 14/68 cut-off events. [2020-10-16 01:46:38,085 INFO L130 PetriNetUnfolder]: For 249/259 co-relation queries the response was YES. [2020-10-16 01:46:38,086 INFO L80 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 68 events. 14/68 cut-off events. For 249/259 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 269 event pairs, 0 based on Foata normal form. 5/69 useless extension candidates. Maximal degree in co-relation 273. Up to 28 conditions per place. [2020-10-16 01:46:38,087 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 2 selfloop transitions, 2 changer transitions 9/32 dead transitions. [2020-10-16 01:46:38,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 232 flow [2020-10-16 01:46:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2020-10-16 01:46:38,088 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8672566371681416 [2020-10-16 01:46:38,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2020-10-16 01:46:38,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2020-10-16 01:46:38,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:38,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2020-10-16 01:46:38,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:38,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:38,091 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:38,091 INFO L185 Difference]: Start difference. First operand has 51 places, 32 transitions, 220 flow. Second operand 3 states and 294 transitions. [2020-10-16 01:46:38,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 232 flow [2020-10-16 01:46:38,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 174 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-16 01:46:38,096 INFO L241 Difference]: Finished difference. Result has 45 places, 23 transitions, 114 flow [2020-10-16 01:46:38,096 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=23} [2020-10-16 01:46:38,096 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 01:46:38,096 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 114 flow [2020-10-16 01:46:38,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:38,097 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:38,097 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:38,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:46:38,097 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1779065763, now seen corresponding path program 2 times [2020-10-16 01:46:38,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:38,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714773241] [2020-10-16 01:46:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:38,128 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 01:46:38,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714773241] [2020-10-16 01:46:38,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:38,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:38,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424862135] [2020-10-16 01:46:38,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:38,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:38,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:38,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:38,132 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:46:38,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 114 flow. Second operand 4 states. [2020-10-16 01:46:38,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:38,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:46:38,133 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:38,152 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2020-10-16 01:46:38,152 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2020-10-16 01:46:38,153 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 41 events. 10/41 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 88 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 112. Up to 15 conditions per place. [2020-10-16 01:46:38,153 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 01:46:38,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 24 transitions, 126 flow [2020-10-16 01:46:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2020-10-16 01:46:38,156 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.827433628318584 [2020-10-16 01:46:38,156 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2020-10-16 01:46:38,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2020-10-16 01:46:38,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:38,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2020-10-16 01:46:38,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:38,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:38,158 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:38,159 INFO L185 Difference]: Start difference. First operand has 45 places, 23 transitions, 114 flow. Second operand 4 states and 374 transitions. [2020-10-16 01:46:38,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 24 transitions, 126 flow [2020-10-16 01:46:38,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 102 flow, removed 7 selfloop flow, removed 9 redundant places. [2020-10-16 01:46:38,160 INFO L241 Difference]: Finished difference. Result has 36 places, 23 transitions, 97 flow [2020-10-16 01:46:38,161 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2020-10-16 01:46:38,161 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:46:38,161 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 97 flow [2020-10-16 01:46:38,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:38,161 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:38,162 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:38,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:46:38,162 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash -669841867, now seen corresponding path program 3 times [2020-10-16 01:46:38,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:38,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695820529] [2020-10-16 01:46:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:38,194 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 01:46:38,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695820529] [2020-10-16 01:46:38,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:38,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:38,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012530226] [2020-10-16 01:46:38,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:38,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:38,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:38,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:38,197 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:46:38,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 97 flow. Second operand 4 states. [2020-10-16 01:46:38,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:38,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:46:38,198 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:38,213 INFO L129 PetriNetUnfolder]: 7/38 cut-off events. [2020-10-16 01:46:38,213 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-10-16 01:46:38,213 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 38 events. 7/38 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 78 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-16 01:46:38,213 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:46:38,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 103 flow [2020-10-16 01:46:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2020-10-16 01:46:38,215 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8252212389380531 [2020-10-16 01:46:38,215 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2020-10-16 01:46:38,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2020-10-16 01:46:38,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:38,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2020-10-16 01:46:38,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:38,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:38,218 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:38,218 INFO L185 Difference]: Start difference. First operand has 36 places, 23 transitions, 97 flow. Second operand 4 states and 373 transitions. [2020-10-16 01:46:38,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 103 flow [2020-10-16 01:46:38,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:38,220 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 01:46:38,220 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 01:46:38,220 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:46:38,220 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 01:46:38,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:38,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:46:38,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:46:38 BasicIcfg [2020-10-16 01:46:38,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:46:38,227 INFO L168 Benchmark]: Toolchain (without parser) took 3856.34 ms. Allocated memory was 249.0 MB in the beginning and 368.1 MB in the end (delta: 119.0 MB). Free memory was 204.2 MB in the beginning and 251.4 MB in the end (delta: -47.3 MB). Peak memory consumption was 71.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:38,228 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:46:38,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.99 ms. Allocated memory was 249.0 MB in the beginning and 307.8 MB in the end (delta: 58.7 MB). Free memory was 204.2 MB in the beginning and 261.1 MB in the end (delta: -57.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:38,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.63 ms. Allocated memory is still 307.8 MB. Free memory was 261.1 MB in the beginning and 258.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:38,230 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 ms. Allocated memory is still 307.8 MB. Free memory was 258.6 MB in the beginning and 256.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:38,231 INFO L168 Benchmark]: RCFGBuilder took 415.28 ms. Allocated memory is still 307.8 MB. Free memory was 256.1 MB in the beginning and 234.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:38,232 INFO L168 Benchmark]: TraceAbstraction took 2677.89 ms. Allocated memory was 307.8 MB in the beginning and 368.1 MB in the end (delta: 60.3 MB). Free memory was 234.2 MB in the beginning and 251.4 MB in the end (delta: -17.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:38,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 686.99 ms. Allocated memory was 249.0 MB in the beginning and 307.8 MB in the end (delta: 58.7 MB). Free memory was 204.2 MB in the beginning and 261.1 MB in the end (delta: -57.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 44.63 ms. Allocated memory is still 307.8 MB. Free memory was 261.1 MB in the beginning and 258.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.77 ms. Allocated memory is still 307.8 MB. Free memory was 258.6 MB in the beginning and 256.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 415.28 ms. Allocated memory is still 307.8 MB. Free memory was 256.1 MB in the beginning and 234.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2677.89 ms. Allocated memory was 307.8 MB in the beginning and 368.1 MB in the end (delta: 60.3 MB). Free memory was 234.2 MB in the beginning and 251.4 MB in the end (delta: -17.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 594 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1810 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, 69 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: 2.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 26 SDtfs, 15 SDslu, 13 SDs, 0 SdLazy, 99 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=5, 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, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2746 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...