/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:31:49,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:31:49,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:31:49,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:31:49,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:31:49,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:31:49,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:31:49,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:31:49,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:31:49,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:31:49,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:31:49,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:31:49,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:31:49,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:31:49,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:31:49,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:31:49,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:31:49,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:31:49,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:31:49,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:31:49,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:31:49,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:31:49,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:31:49,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:31:49,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:31:49,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:31:49,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:31:49,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:31:49,501 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-NoLbe.epf [2021-03-11 02:31:49,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:31:49,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:31:49,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:31:49,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:31:49,531 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:31:49,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:31:49,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:31:49,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:31:49,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:31:49,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:31:49,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:31:49,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:31:49,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:31:49,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:31:49,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:31:49,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:31:49,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:31:49,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:31:49,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:31:49,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:31:49,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:31:49,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:31:49,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:31:49,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:31:49,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:31:49,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:31:49,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:31:49,535 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:31:49,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:31:49,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:31:49,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:31:49,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:31:49,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:31:49,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:31:49,809 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:31:49,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-03-11 02:31:49,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e93d12f5/e780546f841644888966923f3f705015/FLAG19880500d [2021-03-11 02:31:50,195 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:31:50,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-03-11 02:31:50,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e93d12f5/e780546f841644888966923f3f705015/FLAG19880500d [2021-03-11 02:31:50,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e93d12f5/e780546f841644888966923f3f705015 [2021-03-11 02:31:50,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:31:50,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:31:50,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:31:50,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:31:50,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:31:50,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedbb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50, skipping insertion in model container [2021-03-11 02:31:50,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:31:50,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:31:50,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i[950,963] [2021-03-11 02:31:50,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:31:50,855 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:31:50,862 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i[950,963] [2021-03-11 02:31:50,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:31:50,929 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:31:50,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50 WrapperNode [2021-03-11 02:31:50,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:31:50,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:31:50,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:31:50,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:31:50,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:31:50,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:31:50,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:31:50,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:31:50,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (1/1) ... [2021-03-11 02:31:50,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:31:50,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:31:50,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:31:50,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:31:50,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (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 [2021-03-11 02:31:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:31:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:31:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:31:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:31:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:31:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:31:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:31:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:31:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:31:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:31:51,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:31:51,022 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:31:51,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:31:51,234 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:31:51,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:31:51 BoogieIcfgContainer [2021-03-11 02:31:51,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:31:51,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:31:51,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:31:51,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:31:51,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:31:50" (1/3) ... [2021-03-11 02:31:51,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4218cfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:31:51, skipping insertion in model container [2021-03-11 02:31:51,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:50" (2/3) ... [2021-03-11 02:31:51,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4218cfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:31:51, skipping insertion in model container [2021-03-11 02:31:51,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:31:51" (3/3) ... [2021-03-11 02:31:51,240 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2021-03-11 02:31:51,244 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:31:51,246 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:31:51,247 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:31:51,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,269 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,272 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,272 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,272 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,272 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,277 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,278 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,278 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,278 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:51,279 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:31:51,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:31:51,305 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:31:51,305 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:31:51,305 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:31:51,305 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:31:51,305 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:31:51,305 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:31:51,305 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:31:51,306 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:31:51,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:31:51,353 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 02:31:51,353 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:51,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 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. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:31:51,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:31:51,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 02:31:51,390 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 02:31:51,390 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:51,390 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:51,391 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:51,391 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:51,404 INFO L82 PathProgramCache]: Analyzing trace with hash 342406277, now seen corresponding path program 1 times [2021-03-11 02:31:51,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:51,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228811866] [2021-03-11 02:31:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:51,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:51,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:51,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:51,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:51,684 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:51,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:51,694 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:51,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:51,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:51,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:51,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:51,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:51,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:51,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:31:51,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228811866] [2021-03-11 02:31:51,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:51,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:51,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110585853] [2021-03-11 02:31:51,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:51,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:51,764 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2021-03-11 02:31:51,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:51,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:51,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2021-03-11 02:31:51,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:52,062 INFO L129 PetriNetUnfolder]: 155/449 cut-off events. [2021-03-11 02:31:52,066 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:52,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 449 events. 155/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2444 event pairs, 16 based on Foata normal form. 20/454 useless extension candidates. Maximal degree in co-relation 717. Up to 100 conditions per place. [2021-03-11 02:31:52,073 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 15 selfloop transitions, 6 changer transitions 35/102 dead transitions. [2021-03-11 02:31:52,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 325 flow [2021-03-11 02:31:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:31:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:31:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 816 transitions. [2021-03-11 02:31:52,084 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8369230769230769 [2021-03-11 02:31:52,086 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 816 transitions. [2021-03-11 02:31:52,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 816 transitions. [2021-03-11 02:31:52,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:52,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 816 transitions. [2021-03-11 02:31:52,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.76923076923077) internal successors, (816), 13 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,102 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,103 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 816 transitions. [2021-03-11 02:31:52,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 325 flow [2021-03-11 02:31:52,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:31:52,109 INFO L241 Difference]: Finished difference. Result has 89 places, 61 transitions, 185 flow [2021-03-11 02:31:52,110 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=185, PETRI_PLACES=89, PETRI_TRANSITIONS=61} [2021-03-11 02:31:52,111 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 20 predicate places. [2021-03-11 02:31:52,111 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 61 transitions, 185 flow [2021-03-11 02:31:52,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,111 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:52,112 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:52,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:31:52,112 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1895058182, now seen corresponding path program 1 times [2021-03-11 02:31:52,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:52,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944703282] [2021-03-11 02:31:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:52,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:52,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:52,213 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:52,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:52,220 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:52,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:52,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:52,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:31:52,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944703282] [2021-03-11 02:31:52,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:52,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:52,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544349241] [2021-03-11 02:31:52,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:52,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:52,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:52,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:52,251 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:31:52,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 61 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:52,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:31:52,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:52,517 INFO L129 PetriNetUnfolder]: 240/681 cut-off events. [2021-03-11 02:31:52,517 INFO L130 PetriNetUnfolder]: For 1317/1565 co-relation queries the response was YES. [2021-03-11 02:31:52,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 681 events. 240/681 cut-off events. For 1317/1565 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4110 event pairs, 6 based on Foata normal form. 22/691 useless extension candidates. Maximal degree in co-relation 1926. Up to 148 conditions per place. [2021-03-11 02:31:52,523 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 28 selfloop transitions, 13 changer transitions 59/144 dead transitions. [2021-03-11 02:31:52,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 144 transitions, 922 flow [2021-03-11 02:31:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 02:31:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 02:31:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1044 transitions. [2021-03-11 02:31:52,526 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8188235294117647 [2021-03-11 02:31:52,527 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1044 transitions. [2021-03-11 02:31:52,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1044 transitions. [2021-03-11 02:31:52,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:52,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1044 transitions. [2021-03-11 02:31:52,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 61.411764705882355) internal successors, (1044), 17 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 75.0) internal successors, (1350), 18 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,532 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 75.0) internal successors, (1350), 18 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,532 INFO L185 Difference]: Start difference. First operand has 89 places, 61 transitions, 185 flow. Second operand 17 states and 1044 transitions. [2021-03-11 02:31:52,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 144 transitions, 922 flow [2021-03-11 02:31:52,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 806 flow, removed 40 selfloop flow, removed 8 redundant places. [2021-03-11 02:31:52,542 INFO L241 Difference]: Finished difference. Result has 104 places, 69 transitions, 335 flow [2021-03-11 02:31:52,542 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=335, PETRI_PLACES=104, PETRI_TRANSITIONS=69} [2021-03-11 02:31:52,543 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 35 predicate places. [2021-03-11 02:31:52,543 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 69 transitions, 335 flow [2021-03-11 02:31:52,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,543 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:52,543 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:52,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:31:52,544 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:52,549 INFO L82 PathProgramCache]: Analyzing trace with hash 342524871, now seen corresponding path program 1 times [2021-03-11 02:31:52,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:52,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307192944] [2021-03-11 02:31:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:52,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:52,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:52,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:52,649 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:52,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:52,658 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:52,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:52,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:52,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:52,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:31:52,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307192944] [2021-03-11 02:31:52,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:52,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:52,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859857850] [2021-03-11 02:31:52,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:52,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:52,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:52,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:52,700 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:31:52,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 69 transitions, 335 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:52,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:31:52,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:52,852 INFO L129 PetriNetUnfolder]: 113/384 cut-off events. [2021-03-11 02:31:52,852 INFO L130 PetriNetUnfolder]: For 3232/3639 co-relation queries the response was YES. [2021-03-11 02:31:52,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 384 events. 113/384 cut-off events. For 3232/3639 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1945 event pairs, 5 based on Foata normal form. 17/392 useless extension candidates. Maximal degree in co-relation 1658. Up to 84 conditions per place. [2021-03-11 02:31:52,857 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 17 selfloop transitions, 7 changer transitions 49/117 dead transitions. [2021-03-11 02:31:52,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 117 transitions, 1050 flow [2021-03-11 02:31:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:31:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:31:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 669 transitions. [2021-03-11 02:31:52,859 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8109090909090909 [2021-03-11 02:31:52,859 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 669 transitions. [2021-03-11 02:31:52,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 669 transitions. [2021-03-11 02:31:52,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:52,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 669 transitions. [2021-03-11 02:31:52,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 60.81818181818182) internal successors, (669), 11 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,862 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,862 INFO L185 Difference]: Start difference. First operand has 104 places, 69 transitions, 335 flow. Second operand 11 states and 669 transitions. [2021-03-11 02:31:52,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 117 transitions, 1050 flow [2021-03-11 02:31:52,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 822 flow, removed 114 selfloop flow, removed 9 redundant places. [2021-03-11 02:31:52,872 INFO L241 Difference]: Finished difference. Result has 101 places, 62 transitions, 254 flow [2021-03-11 02:31:52,872 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=254, PETRI_PLACES=101, PETRI_TRANSITIONS=62} [2021-03-11 02:31:52,873 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 32 predicate places. [2021-03-11 02:31:52,873 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 62 transitions, 254 flow [2021-03-11 02:31:52,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:52,873 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:52,873 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:52,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:31:52,873 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1721846773, now seen corresponding path program 1 times [2021-03-11 02:31:52,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:52,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582542641] [2021-03-11 02:31:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:52,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:52,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:52,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:52,956 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:52,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:52,963 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:52,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:52,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:52,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:52,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:52,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:31:52,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582542641] [2021-03-11 02:31:52,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:52,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:52,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712862891] [2021-03-11 02:31:52,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:52,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:52,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:52,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:52,999 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:31:53,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 62 transitions, 254 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:53,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:31:53,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:53,124 INFO L129 PetriNetUnfolder]: 37/194 cut-off events. [2021-03-11 02:31:53,124 INFO L130 PetriNetUnfolder]: For 639/743 co-relation queries the response was YES. [2021-03-11 02:31:53,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 194 events. 37/194 cut-off events. For 639/743 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 740 event pairs, 0 based on Foata normal form. 12/204 useless extension candidates. Maximal degree in co-relation 600. Up to 23 conditions per place. [2021-03-11 02:31:53,125 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 14 selfloop transitions, 5 changer transitions 32/94 dead transitions. [2021-03-11 02:31:53,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 630 flow [2021-03-11 02:31:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:31:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:31:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 662 transitions. [2021-03-11 02:31:53,127 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8024242424242424 [2021-03-11 02:31:53,127 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 662 transitions. [2021-03-11 02:31:53,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 662 transitions. [2021-03-11 02:31:53,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:53,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 662 transitions. [2021-03-11 02:31:53,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 60.18181818181818) internal successors, (662), 11 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,130 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,130 INFO L185 Difference]: Start difference. First operand has 101 places, 62 transitions, 254 flow. Second operand 11 states and 662 transitions. [2021-03-11 02:31:53,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 630 flow [2021-03-11 02:31:53,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 94 transitions, 455 flow, removed 41 selfloop flow, removed 16 redundant places. [2021-03-11 02:31:53,133 INFO L241 Difference]: Finished difference. Result has 97 places, 58 transitions, 195 flow [2021-03-11 02:31:53,133 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=195, PETRI_PLACES=97, PETRI_TRANSITIONS=58} [2021-03-11 02:31:53,134 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 28 predicate places. [2021-03-11 02:31:53,136 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 58 transitions, 195 flow [2021-03-11 02:31:53,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,136 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:53,136 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:53,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:31:53,137 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:53,137 INFO L82 PathProgramCache]: Analyzing trace with hash 279352736, now seen corresponding path program 1 times [2021-03-11 02:31:53,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:53,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092833077] [2021-03-11 02:31:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:53,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:53,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:53,190 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:31:53,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:31:53,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:31:53,212 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:31:53,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:53,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:31:53,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092833077] [2021-03-11 02:31:53,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:53,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:31:53,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196181998] [2021-03-11 02:31:53,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:31:53,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:53,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:31:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:31:53,221 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:31:53,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 58 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:53,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:31:53,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:53,321 INFO L129 PetriNetUnfolder]: 93/281 cut-off events. [2021-03-11 02:31:53,321 INFO L130 PetriNetUnfolder]: For 98/100 co-relation queries the response was YES. [2021-03-11 02:31:53,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 281 events. 93/281 cut-off events. For 98/100 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1341 event pairs, 12 based on Foata normal form. 8/278 useless extension candidates. Maximal degree in co-relation 531. Up to 86 conditions per place. [2021-03-11 02:31:53,323 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 9 selfloop transitions, 5 changer transitions 21/83 dead transitions. [2021-03-11 02:31:53,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 315 flow [2021-03-11 02:31:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:31:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:31:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 586 transitions. [2021-03-11 02:31:53,325 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8681481481481481 [2021-03-11 02:31:53,325 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 586 transitions. [2021-03-11 02:31:53,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 586 transitions. [2021-03-11 02:31:53,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:53,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 586 transitions. [2021-03-11 02:31:53,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.11111111111111) internal successors, (586), 9 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,330 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,330 INFO L185 Difference]: Start difference. First operand has 97 places, 58 transitions, 195 flow. Second operand 9 states and 586 transitions. [2021-03-11 02:31:53,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 315 flow [2021-03-11 02:31:53,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 271 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-03-11 02:31:53,333 INFO L241 Difference]: Finished difference. Result has 89 places, 60 transitions, 201 flow [2021-03-11 02:31:53,334 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=89, PETRI_TRANSITIONS=60} [2021-03-11 02:31:53,334 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 20 predicate places. [2021-03-11 02:31:53,334 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 60 transitions, 201 flow [2021-03-11 02:31:53,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:53,334 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:53,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:31:53,335 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1630534149, now seen corresponding path program 1 times [2021-03-11 02:31:53,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:53,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989604077] [2021-03-11 02:31:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:53,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:53,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:53,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:53,407 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:31:53,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:31:53,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:31:53,428 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:31:53,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:53,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:31:53,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989604077] [2021-03-11 02:31:53,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:53,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:53,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261385463] [2021-03-11 02:31:53,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:53,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:53,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:53,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:53,440 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:31:53,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 60 transitions, 201 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:53,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:31:53,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:53,545 INFO L129 PetriNetUnfolder]: 42/172 cut-off events. [2021-03-11 02:31:53,546 INFO L130 PetriNetUnfolder]: For 235/290 co-relation queries the response was YES. [2021-03-11 02:31:53,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 172 events. 42/172 cut-off events. For 235/290 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 648 event pairs, 0 based on Foata normal form. 10/178 useless extension candidates. Maximal degree in co-relation 507. Up to 64 conditions per place. [2021-03-11 02:31:53,547 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 5 selfloop transitions, 7 changer transitions 25/85 dead transitions. [2021-03-11 02:31:53,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 452 flow [2021-03-11 02:31:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:31:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:31:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 649 transitions. [2021-03-11 02:31:53,549 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8653333333333333 [2021-03-11 02:31:53,549 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 649 transitions. [2021-03-11 02:31:53,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 649 transitions. [2021-03-11 02:31:53,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:53,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 649 transitions. [2021-03-11 02:31:53,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.9) internal successors, (649), 10 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,552 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,552 INFO L185 Difference]: Start difference. First operand has 89 places, 60 transitions, 201 flow. Second operand 10 states and 649 transitions. [2021-03-11 02:31:53,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 452 flow [2021-03-11 02:31:53,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 418 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-11 02:31:53,555 INFO L241 Difference]: Finished difference. Result has 93 places, 60 transitions, 216 flow [2021-03-11 02:31:53,555 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=216, PETRI_PLACES=93, PETRI_TRANSITIONS=60} [2021-03-11 02:31:53,555 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 24 predicate places. [2021-03-11 02:31:53,555 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 60 transitions, 216 flow [2021-03-11 02:31:53,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,556 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:53,556 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:53,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:31:53,556 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:53,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:53,556 INFO L82 PathProgramCache]: Analyzing trace with hash -267272630, now seen corresponding path program 1 times [2021-03-11 02:31:53,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:53,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746739491] [2021-03-11 02:31:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:53,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:53,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:53,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:53,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:53,608 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:31:53,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:31:53,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:31:53,627 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:31:53,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:53,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:53,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:31:53,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746739491] [2021-03-11 02:31:53,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:53,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:53,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238697826] [2021-03-11 02:31:53,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:53,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:53,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:53,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:53,637 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:31:53,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 60 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:53,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:31:53,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:53,726 INFO L129 PetriNetUnfolder]: 4/69 cut-off events. [2021-03-11 02:31:53,726 INFO L130 PetriNetUnfolder]: For 175/197 co-relation queries the response was YES. [2021-03-11 02:31:53,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 69 events. 4/69 cut-off events. For 175/197 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 105 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 179. Up to 13 conditions per place. [2021-03-11 02:31:53,726 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-03-11 02:31:53,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 63 transitions, 312 flow [2021-03-11 02:31:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:31:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:31:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 694 transitions. [2021-03-11 02:31:53,728 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8412121212121212 [2021-03-11 02:31:53,728 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 694 transitions. [2021-03-11 02:31:53,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 694 transitions. [2021-03-11 02:31:53,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:53,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 694 transitions. [2021-03-11 02:31:53,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 63.09090909090909) internal successors, (694), 11 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,731 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,731 INFO L185 Difference]: Start difference. First operand has 93 places, 60 transitions, 216 flow. Second operand 11 states and 694 transitions. [2021-03-11 02:31:53,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 63 transitions, 312 flow [2021-03-11 02:31:53,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 63 transitions, 245 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-03-11 02:31:53,733 INFO L241 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2021-03-11 02:31:53,733 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2021-03-11 02:31:53,733 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 13 predicate places. [2021-03-11 02:31:53,733 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2021-03-11 02:31:53,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:53,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:31:53,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:31:53 BasicIcfg [2021-03-11 02:31:53,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:31:53,739 INFO L168 Benchmark]: Toolchain (without parser) took 3164.05 ms. Allocated memory was 255.9 MB in the beginning and 438.3 MB in the end (delta: 182.5 MB). Free memory was 234.9 MB in the beginning and 313.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 103.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:53,739 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:31:53,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.73 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 234.9 MB in the beginning and 328.0 MB in the end (delta: -93.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:53,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.06 ms. Allocated memory is still 364.9 MB. Free memory was 328.0 MB in the beginning and 326.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:53,742 INFO L168 Benchmark]: Boogie Preprocessor took 13.78 ms. Allocated memory is still 364.9 MB. Free memory was 326.1 MB in the beginning and 324.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:53,743 INFO L168 Benchmark]: RCFGBuilder took 264.46 ms. Allocated memory is still 364.9 MB. Free memory was 324.7 MB in the beginning and 303.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:53,745 INFO L168 Benchmark]: TraceAbstraction took 2500.87 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 302.4 MB in the beginning and 313.3 MB in the end (delta: -10.9 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:53,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 352.73 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 234.9 MB in the beginning and 328.0 MB in the end (delta: -93.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.06 ms. Allocated memory is still 364.9 MB. Free memory was 328.0 MB in the beginning and 326.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.78 ms. Allocated memory is still 364.9 MB. Free memory was 326.1 MB in the beginning and 324.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 264.46 ms. Allocated memory is still 364.9 MB. Free memory was 324.7 MB in the beginning and 303.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2500.87 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 302.4 MB in the beginning and 313.3 MB in the end (delta: -10.9 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2431.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1284.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 67.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 109 SDtfs, 283 SDslu, 371 SDs, 0 SdLazy, 316 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 785.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=2, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.8ms SsaConstructionTime, 177.1ms SatisfiabilityAnalysisTime, 668.2ms InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 1321 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...