/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/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:34:49,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:34:49,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:34:49,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:34:49,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:34:49,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:34:49,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:34:49,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:34:49,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:34:49,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:34:49,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:34:49,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:34:49,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:34:49,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:34:49,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:34:49,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:34:49,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:34:49,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:34:49,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:34:49,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:34:49,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:34:49,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:34:49,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:34:49,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:34:49,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:34:49,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:34:49,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:34:49,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:34:49,408 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 02:34:49,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:34:49,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:34:49,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:34:49,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:34:49,441 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:34:49,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:34:49,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:34:49,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:34:49,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:34:49,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:34:49,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:34:49,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:34:49,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:34:49,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:34:49,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:34:49,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:34:49,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:34:49,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:34:49,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:34:49,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:34:49,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:34:49,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:34:49,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:34:49,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:34:49,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:34:49,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:34:49,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:34:49,793 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:34:49,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-03-11 02:34:49,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a41878fe/4f231c8038964caf91e0d8c9549ec9f9/FLAGc06758f90 [2021-03-11 02:34:50,379 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:34:50,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-03-11 02:34:50,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a41878fe/4f231c8038964caf91e0d8c9549ec9f9/FLAGc06758f90 [2021-03-11 02:34:50,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a41878fe/4f231c8038964caf91e0d8c9549ec9f9 [2021-03-11 02:34:50,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:34:50,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:34:50,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:34:50,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:34:50,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:34:50,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:34:50" (1/1) ... [2021-03-11 02:34:50,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534f4273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:50, skipping insertion in model container [2021-03-11 02:34:50,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:34:50" (1/1) ... [2021-03-11 02:34:50,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:34:50,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:34:51,044 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/safe020_tso.oepc.i[950,963] [2021-03-11 02:34:51,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:34:51,158 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:34:51,168 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/safe020_tso.oepc.i[950,963] [2021-03-11 02:34:51,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:34:51,253 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:34:51,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51 WrapperNode [2021-03-11 02:34:51,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:34:51,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:34:51,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:34:51,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:34:51,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:34:51,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:34:51,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:34:51,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:34:51,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (1/1) ... [2021-03-11 02:34:51,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:34:51,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:34:51,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:34:51,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:34:51,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (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 02:34:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:34:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:34:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:34:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:34:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:34:51,376 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:34:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:34:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:34:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:34:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:34:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:34:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:34:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:34:51,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:34:51,378 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 02:34:51,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:34:51,770 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:34:51,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:51 BoogieIcfgContainer [2021-03-11 02:34:51,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:34:51,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:34:51,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:34:51,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:34:51,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:34:50" (1/3) ... [2021-03-11 02:34:51,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605b409c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:34:51, skipping insertion in model container [2021-03-11 02:34:51,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:51" (2/3) ... [2021-03-11 02:34:51,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605b409c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:34:51, skipping insertion in model container [2021-03-11 02:34:51,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:51" (3/3) ... [2021-03-11 02:34:51,779 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2021-03-11 02:34:51,784 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:34:51,788 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:34:51,789 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:34:51,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,823 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,827 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,831 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,831 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,840 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,841 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:51,843 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:34:51,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:34:51,887 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:34:51,887 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:34:51,887 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:34:51,887 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:34:51,887 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:34:51,888 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:34:51,888 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:34:51,888 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:34:51,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 02:34:51,944 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 02:34:51,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:51,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 02:34:51,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 02:34:51,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-11 02:34:51,997 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-03-11 02:34:51,997 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:51,997 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:51,998 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] [2021-03-11 02:34:51,999 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:52,003 INFO L82 PathProgramCache]: Analyzing trace with hash 593098047, now seen corresponding path program 1 times [2021-03-11 02:34:52,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:52,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482902471] [2021-03-11 02:34:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:52,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:52,235 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:52,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:52,257 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:52,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:52,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:52,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:52,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:52,349 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 02:34:52,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482902471] [2021-03-11 02:34:52,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:52,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:34:52,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897361057] [2021-03-11 02:34:52,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:34:52,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:52,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:34:52,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:34:52,373 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-03-11 02:34:52,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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 02:34:52,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:52,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-03-11 02:34:52,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:52,609 INFO L129 PetriNetUnfolder]: 100/336 cut-off events. [2021-03-11 02:34:52,609 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:52,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 336 events. 100/336 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1699 event pairs, 32 based on Foata normal form. 13/338 useless extension candidates. Maximal degree in co-relation 525. Up to 87 conditions per place. [2021-03-11 02:34:52,613 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 15 selfloop transitions, 5 changer transitions 28/92 dead transitions. [2021-03-11 02:34:52,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 289 flow [2021-03-11 02:34:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:34:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:34:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2021-03-11 02:34:52,626 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8462709284627092 [2021-03-11 02:34:52,627 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2021-03-11 02:34:52,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2021-03-11 02:34:52,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:52,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2021-03-11 02:34:52,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.77777777777778) internal successors, (556), 9 states have internal predecessors, (556), 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 02:34:52,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 02:34:52,649 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 02:34:52,650 INFO L185 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 9 states and 556 transitions. [2021-03-11 02:34:52,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 289 flow [2021-03-11 02:34:52,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:34:52,664 INFO L241 Difference]: Finished difference. Result has 79 places, 60 transitions, 179 flow [2021-03-11 02:34:52,666 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=179, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2021-03-11 02:34:52,667 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2021-03-11 02:34:52,667 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 179 flow [2021-03-11 02:34:52,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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 02:34:52,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:52,667 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] [2021-03-11 02:34:52,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:34:52,668 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:52,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:52,669 INFO L82 PathProgramCache]: Analyzing trace with hash -441614848, now seen corresponding path program 1 times [2021-03-11 02:34:52,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:52,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613946788] [2021-03-11 02:34:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:52,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:52,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:52,789 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:52,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:52,798 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:52,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:52,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:52,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:52,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:52,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:52,858 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 02:34:52,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613946788] [2021-03-11 02:34:52,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:52,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:52,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881938497] [2021-03-11 02:34:52,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:52,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:52,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:52,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:52,863 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-03-11 02:34:52,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 179 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:34:52,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:52,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-03-11 02:34:52,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:53,105 INFO L129 PetriNetUnfolder]: 63/277 cut-off events. [2021-03-11 02:34:53,105 INFO L130 PetriNetUnfolder]: For 359/443 co-relation queries the response was YES. [2021-03-11 02:34:53,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 277 events. 63/277 cut-off events. For 359/443 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1380 event pairs, 10 based on Foata normal form. 8/278 useless extension candidates. Maximal degree in co-relation 696. Up to 63 conditions per place. [2021-03-11 02:34:53,108 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 16 selfloop transitions, 6 changer transitions 25/91 dead transitions. [2021-03-11 02:34:53,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 474 flow [2021-03-11 02:34:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 777 transitions. [2021-03-11 02:34:53,117 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8187565858798735 [2021-03-11 02:34:53,117 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 777 transitions. [2021-03-11 02:34:53,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 777 transitions. [2021-03-11 02:34:53,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:53,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 777 transitions. [2021-03-11 02:34:53,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.76923076923077) internal successors, (777), 13 states have internal predecessors, (777), 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 02:34:53,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:34:53,122 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:34:53,122 INFO L185 Difference]: Start difference. First operand has 79 places, 60 transitions, 179 flow. Second operand 13 states and 777 transitions. [2021-03-11 02:34:53,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 474 flow [2021-03-11 02:34:53,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 91 transitions, 438 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 02:34:53,127 INFO L241 Difference]: Finished difference. Result has 92 places, 61 transitions, 212 flow [2021-03-11 02:34:53,127 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=92, PETRI_TRANSITIONS=61} [2021-03-11 02:34:53,128 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2021-03-11 02:34:53,128 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 61 transitions, 212 flow [2021-03-11 02:34:53,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:34:53,128 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:53,128 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] [2021-03-11 02:34:53,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:34:53,129 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:53,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1823047648, now seen corresponding path program 1 times [2021-03-11 02:34:53,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:53,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432205051] [2021-03-11 02:34:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:53,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:53,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:53,199 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:53,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:53,208 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:53,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:53,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:53,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:53,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:53,249 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 02:34:53,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432205051] [2021-03-11 02:34:53,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:53,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:53,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542973434] [2021-03-11 02:34:53,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:53,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:53,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:53,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:53,252 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:34:53,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 61 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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 02:34:53,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:53,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:34:53,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:53,611 INFO L129 PetriNetUnfolder]: 225/642 cut-off events. [2021-03-11 02:34:53,612 INFO L130 PetriNetUnfolder]: For 1676/1948 co-relation queries the response was YES. [2021-03-11 02:34:53,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 642 events. 225/642 cut-off events. For 1676/1948 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3973 event pairs, 5 based on Foata normal form. 24/655 useless extension candidates. Maximal degree in co-relation 1949. Up to 127 conditions per place. [2021-03-11 02:34:53,620 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 28 selfloop transitions, 18 changer transitions 62/150 dead transitions. [2021-03-11 02:34:53,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 150 transitions, 1103 flow [2021-03-11 02:34:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 02:34:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 02:34:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1012 transitions. [2021-03-11 02:34:53,628 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8154713940370669 [2021-03-11 02:34:53,628 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1012 transitions. [2021-03-11 02:34:53,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1012 transitions. [2021-03-11 02:34:53,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:53,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1012 transitions. [2021-03-11 02:34:53,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.529411764705884) internal successors, (1012), 17 states have internal predecessors, (1012), 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 02:34:53,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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 02:34:53,635 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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 02:34:53,635 INFO L185 Difference]: Start difference. First operand has 92 places, 61 transitions, 212 flow. Second operand 17 states and 1012 transitions. [2021-03-11 02:34:53,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 150 transitions, 1103 flow [2021-03-11 02:34:53,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 941 flow, removed 60 selfloop flow, removed 11 redundant places. [2021-03-11 02:34:53,647 INFO L241 Difference]: Finished difference. Result has 104 places, 73 transitions, 411 flow [2021-03-11 02:34:53,648 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=411, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2021-03-11 02:34:53,648 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 37 predicate places. [2021-03-11 02:34:53,648 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 411 flow [2021-03-11 02:34:53,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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 02:34:53,648 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:53,648 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] [2021-03-11 02:34:53,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:34:53,649 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash 36889953, now seen corresponding path program 1 times [2021-03-11 02:34:53,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:53,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892025737] [2021-03-11 02:34:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:53,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:53,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:53,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:53,745 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:53,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:53,770 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:53,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:53,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:53,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:53,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:53,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:53,841 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 02:34:53,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892025737] [2021-03-11 02:34:53,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:53,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:53,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249080052] [2021-03-11 02:34:53,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:53,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:53,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:53,844 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:34:53,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 411 flow. Second operand has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 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 02:34:53,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:53,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:34:53,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:54,092 INFO L129 PetriNetUnfolder]: 117/409 cut-off events. [2021-03-11 02:34:54,092 INFO L130 PetriNetUnfolder]: For 3578/4034 co-relation queries the response was YES. [2021-03-11 02:34:54,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 409 events. 117/409 cut-off events. For 3578/4034 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2232 event pairs, 10 based on Foata normal form. 17/418 useless extension candidates. Maximal degree in co-relation 1809. Up to 90 conditions per place. [2021-03-11 02:34:54,097 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 18 selfloop transitions, 9 changer transitions 46/115 dead transitions. [2021-03-11 02:34:54,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 1083 flow [2021-03-11 02:34:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:34:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:34:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2021-03-11 02:34:54,100 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8057285180572852 [2021-03-11 02:34:54,100 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2021-03-11 02:34:54,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2021-03-11 02:34:54,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:54,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2021-03-11 02:34:54,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.81818181818182) internal successors, (647), 11 states have internal predecessors, (647), 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 02:34:54,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 02:34:54,104 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 02:34:54,104 INFO L185 Difference]: Start difference. First operand has 104 places, 73 transitions, 411 flow. Second operand 11 states and 647 transitions. [2021-03-11 02:34:54,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 1083 flow [2021-03-11 02:34:54,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 879 flow, removed 102 selfloop flow, removed 9 redundant places. [2021-03-11 02:34:54,116 INFO L241 Difference]: Finished difference. Result has 101 places, 63 transitions, 288 flow [2021-03-11 02:34:54,116 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=288, PETRI_PLACES=101, PETRI_TRANSITIONS=63} [2021-03-11 02:34:54,116 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2021-03-11 02:34:54,116 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 63 transitions, 288 flow [2021-03-11 02:34:54,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 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 02:34:54,117 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:54,117 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] [2021-03-11 02:34:54,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:34:54,117 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:54,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:54,118 INFO L82 PathProgramCache]: Analyzing trace with hash -103778719, now seen corresponding path program 1 times [2021-03-11 02:34:54,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:54,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107119165] [2021-03-11 02:34:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:54,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:54,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:54,191 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:54,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:54,201 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:54,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:54,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:54,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:54,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:54,242 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 02:34:54,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107119165] [2021-03-11 02:34:54,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:54,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:54,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264740158] [2021-03-11 02:34:54,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:54,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:54,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:54,245 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-03-11 02:34:54,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 63 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:34:54,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:54,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-03-11 02:34:54,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:54,472 INFO L129 PetriNetUnfolder]: 52/275 cut-off events. [2021-03-11 02:34:54,472 INFO L130 PetriNetUnfolder]: For 917/973 co-relation queries the response was YES. [2021-03-11 02:34:54,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 275 events. 52/275 cut-off events. For 917/973 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1435 event pairs, 11 based on Foata normal form. 11/284 useless extension candidates. Maximal degree in co-relation 938. Up to 52 conditions per place. [2021-03-11 02:34:54,476 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 14 selfloop transitions, 9 changer transitions 28/96 dead transitions. [2021-03-11 02:34:54,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 718 flow [2021-03-11 02:34:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 780 transitions. [2021-03-11 02:34:54,482 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.821917808219178 [2021-03-11 02:34:54,482 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 780 transitions. [2021-03-11 02:34:54,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 780 transitions. [2021-03-11 02:34:54,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:54,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 780 transitions. [2021-03-11 02:34:54,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 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 02:34:54,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:34:54,489 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:34:54,489 INFO L185 Difference]: Start difference. First operand has 101 places, 63 transitions, 288 flow. Second operand 13 states and 780 transitions. [2021-03-11 02:34:54,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 718 flow [2021-03-11 02:34:54,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 513 flow, removed 46 selfloop flow, removed 16 redundant places. [2021-03-11 02:34:54,496 INFO L241 Difference]: Finished difference. Result has 101 places, 64 transitions, 260 flow [2021-03-11 02:34:54,496 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=101, PETRI_TRANSITIONS=64} [2021-03-11 02:34:54,496 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2021-03-11 02:34:54,496 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 64 transitions, 260 flow [2021-03-11 02:34:54,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 02:34:54,497 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:54,497 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 02:34:54,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:34:54,497 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash 554183906, now seen corresponding path program 1 times [2021-03-11 02:34:54,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:54,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299952888] [2021-03-11 02:34:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:54,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:54,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:54,573 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:54,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:54,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:54,600 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:54,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:54,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:54,614 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 02:34:54,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299952888] [2021-03-11 02:34:54,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:54,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:34:54,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142354356] [2021-03-11 02:34:54,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:34:54,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:54,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:34:54,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:34:54,620 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:34:54,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 64 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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 02:34:54,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:54,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:34:54,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:54,821 INFO L129 PetriNetUnfolder]: 303/784 cut-off events. [2021-03-11 02:34:54,821 INFO L130 PetriNetUnfolder]: For 474/488 co-relation queries the response was YES. [2021-03-11 02:34:54,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1676 conditions, 784 events. 303/784 cut-off events. For 474/488 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5281 event pairs, 40 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 1653. Up to 212 conditions per place. [2021-03-11 02:34:54,827 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 24 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2021-03-11 02:34:54,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 402 flow [2021-03-11 02:34:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:34:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:34:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2021-03-11 02:34:54,829 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8671232876712329 [2021-03-11 02:34:54,830 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 633 transitions. [2021-03-11 02:34:54,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 633 transitions. [2021-03-11 02:34:54,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:54,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 633 transitions. [2021-03-11 02:34:54,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 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 02:34:54,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 02:34:54,834 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 02:34:54,834 INFO L185 Difference]: Start difference. First operand has 101 places, 64 transitions, 260 flow. Second operand 10 states and 633 transitions. [2021-03-11 02:34:54,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 402 flow [2021-03-11 02:34:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 368 flow, removed 12 selfloop flow, removed 11 redundant places. [2021-03-11 02:34:54,838 INFO L241 Difference]: Finished difference. Result has 96 places, 79 transitions, 346 flow [2021-03-11 02:34:54,839 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2021-03-11 02:34:54,839 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2021-03-11 02:34:54,839 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 346 flow [2021-03-11 02:34:54,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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 02:34:54,839 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:54,840 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] [2021-03-11 02:34:54,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:34:54,840 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:54,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1526664032, now seen corresponding path program 1 times [2021-03-11 02:34:54,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:54,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060726433] [2021-03-11 02:34:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:54,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:54,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:54,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:54,905 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:54,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:54,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:54,931 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:54,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:54,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:54,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:54,942 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 02:34:54,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060726433] [2021-03-11 02:34:54,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:54,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:54,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513963766] [2021-03-11 02:34:54,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:54,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:54,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:54,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:54,945 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:34:54,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 02:34:54,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:54,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:34:54,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:55,213 INFO L129 PetriNetUnfolder]: 288/790 cut-off events. [2021-03-11 02:34:55,214 INFO L130 PetriNetUnfolder]: For 1639/1905 co-relation queries the response was YES. [2021-03-11 02:34:55,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 790 events. 288/790 cut-off events. For 1639/1905 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5598 event pairs, 1 based on Foata normal form. 79/812 useless extension candidates. Maximal degree in co-relation 2636. Up to 306 conditions per place. [2021-03-11 02:34:55,220 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 20 selfloop transitions, 32 changer transitions 9/114 dead transitions. [2021-03-11 02:34:55,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 692 flow [2021-03-11 02:34:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 824 transitions. [2021-03-11 02:34:55,222 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8682824025289779 [2021-03-11 02:34:55,222 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 824 transitions. [2021-03-11 02:34:55,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 824 transitions. [2021-03-11 02:34:55,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:55,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 824 transitions. [2021-03-11 02:34:55,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 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 02:34:55,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:34:55,227 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:34:55,227 INFO L185 Difference]: Start difference. First operand has 96 places, 79 transitions, 346 flow. Second operand 13 states and 824 transitions. [2021-03-11 02:34:55,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 692 flow [2021-03-11 02:34:55,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 683 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 02:34:55,235 INFO L241 Difference]: Finished difference. Result has 110 places, 99 transitions, 580 flow [2021-03-11 02:34:55,235 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=580, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2021-03-11 02:34:55,235 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 43 predicate places. [2021-03-11 02:34:55,235 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 580 flow [2021-03-11 02:34:55,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 02:34:55,236 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:55,236 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 02:34:55,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:34:55,236 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1053679083, now seen corresponding path program 1 times [2021-03-11 02:34:55,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:55,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833561985] [2021-03-11 02:34:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:55,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:55,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:55,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:55,283 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:55,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:55,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:55,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:55,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:55,319 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 02:34:55,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833561985] [2021-03-11 02:34:55,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:55,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:55,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105753263] [2021-03-11 02:34:55,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:55,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:55,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:55,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:55,322 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 73 [2021-03-11 02:34:55,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 580 flow. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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 02:34:55,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:55,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 73 [2021-03-11 02:34:55,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:55,502 INFO L129 PetriNetUnfolder]: 205/826 cut-off events. [2021-03-11 02:34:55,502 INFO L130 PetriNetUnfolder]: For 2323/2520 co-relation queries the response was YES. [2021-03-11 02:34:55,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 826 events. 205/826 cut-off events. For 2323/2520 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6740 event pairs, 0 based on Foata normal form. 9/788 useless extension candidates. Maximal degree in co-relation 2701. Up to 250 conditions per place. [2021-03-11 02:34:55,507 INFO L132 encePairwiseOnDemand]: 67/73 looper letters, 15 selfloop transitions, 3 changer transitions 39/109 dead transitions. [2021-03-11 02:34:55,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 680 flow [2021-03-11 02:34:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:34:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:34:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 428 transitions. [2021-03-11 02:34:55,509 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.837573385518591 [2021-03-11 02:34:55,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 428 transitions. [2021-03-11 02:34:55,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 428 transitions. [2021-03-11 02:34:55,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:55,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 428 transitions. [2021-03-11 02:34:55,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 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 02:34:55,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 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 02:34:55,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 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 02:34:55,512 INFO L185 Difference]: Start difference. First operand has 110 places, 99 transitions, 580 flow. Second operand 7 states and 428 transitions. [2021-03-11 02:34:55,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 680 flow [2021-03-11 02:34:55,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 566 flow, removed 44 selfloop flow, removed 6 redundant places. [2021-03-11 02:34:55,532 INFO L241 Difference]: Finished difference. Result has 115 places, 66 transitions, 289 flow [2021-03-11 02:34:55,533 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=115, PETRI_TRANSITIONS=66} [2021-03-11 02:34:55,533 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 48 predicate places. [2021-03-11 02:34:55,533 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 66 transitions, 289 flow [2021-03-11 02:34:55,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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 02:34:55,533 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:55,533 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 02:34:55,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:34:55,534 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1975555061, now seen corresponding path program 2 times [2021-03-11 02:34:55,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:55,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894511523] [2021-03-11 02:34:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:55,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:55,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:55,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:55,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:55,606 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:55,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:55,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:55,630 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:55,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:55,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:55,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:55,641 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 02:34:55,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894511523] [2021-03-11 02:34:55,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:55,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:55,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417292647] [2021-03-11 02:34:55,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:55,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:55,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:55,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:55,644 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:34:55,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 66 transitions, 289 flow. Second operand has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 02:34:55,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:55,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:34:55,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:55,787 INFO L129 PetriNetUnfolder]: 33/220 cut-off events. [2021-03-11 02:34:55,787 INFO L130 PetriNetUnfolder]: For 363/422 co-relation queries the response was YES. [2021-03-11 02:34:55,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 220 events. 33/220 cut-off events. For 363/422 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1146 event pairs, 1 based on Foata normal form. 34/248 useless extension candidates. Maximal degree in co-relation 573. Up to 64 conditions per place. [2021-03-11 02:34:55,788 INFO L132 encePairwiseOnDemand]: 65/73 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2021-03-11 02:34:55,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 66 transitions, 325 flow [2021-03-11 02:34:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:34:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:34:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2021-03-11 02:34:55,791 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8368617683686177 [2021-03-11 02:34:55,791 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 672 transitions. [2021-03-11 02:34:55,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 672 transitions. [2021-03-11 02:34:55,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:55,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 672 transitions. [2021-03-11 02:34:55,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.09090909090909) internal successors, (672), 11 states have internal predecessors, (672), 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 02:34:55,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 02:34:55,796 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 02:34:55,796 INFO L185 Difference]: Start difference. First operand has 115 places, 66 transitions, 289 flow. Second operand 11 states and 672 transitions. [2021-03-11 02:34:55,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 66 transitions, 325 flow [2021-03-11 02:34:55,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 66 transitions, 265 flow, removed 15 selfloop flow, removed 14 redundant places. [2021-03-11 02:34:55,800 INFO L241 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-03-11 02:34:55,800 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-03-11 02:34:55,800 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2021-03-11 02:34:55,800 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-03-11 02:34:55,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 02:34:55,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:34:55,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:34:55 BasicIcfg [2021-03-11 02:34:55,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:34:55,809 INFO L168 Benchmark]: Toolchain (without parser) took 4983.52 ms. Allocated memory was 255.9 MB in the beginning and 486.5 MB in the end (delta: 230.7 MB). Free memory was 234.8 MB in the beginning and 327.9 MB in the end (delta: -93.1 MB). Peak memory consumption was 137.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:55,810 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:34:55,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.89 ms. Allocated memory was 255.9 MB in the beginning and 404.8 MB in the end (delta: 148.9 MB). Free memory was 233.9 MB in the beginning and 367.1 MB in the end (delta: -133.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:55,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 404.8 MB. Free memory was 367.1 MB in the beginning and 365.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:55,812 INFO L168 Benchmark]: Boogie Preprocessor took 18.55 ms. Allocated memory is still 404.8 MB. Free memory was 365.0 MB in the beginning and 363.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:55,812 INFO L168 Benchmark]: RCFGBuilder took 459.09 ms. Allocated memory is still 404.8 MB. Free memory was 363.4 MB in the beginning and 341.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:55,812 INFO L168 Benchmark]: TraceAbstraction took 4030.78 ms. Allocated memory was 404.8 MB in the beginning and 486.5 MB in the end (delta: 81.8 MB). Free memory was 341.4 MB in the beginning and 327.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 96.9 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:55,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 425.89 ms. Allocated memory was 255.9 MB in the beginning and 404.8 MB in the end (delta: 148.9 MB). Free memory was 233.9 MB in the beginning and 367.1 MB in the end (delta: -133.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 404.8 MB. Free memory was 367.1 MB in the beginning and 365.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.55 ms. Allocated memory is still 404.8 MB. Free memory was 365.0 MB in the beginning and 363.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 459.09 ms. Allocated memory is still 404.8 MB. Free memory was 363.4 MB in the beginning and 341.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4030.78 ms. Allocated memory was 404.8 MB in the beginning and 486.5 MB in the end (delta: 81.8 MB). Free memory was 341.4 MB in the beginning and 327.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 96.9 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 35.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3918.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2369.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 73.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 144 SDtfs, 345 SDslu, 453 SDs, 0 SdLazy, 446 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 370.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1320.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=580occurred in iteration=7, InterpolantAutomatonStates: 104, 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: 30.9ms SsaConstructionTime, 176.6ms SatisfiabilityAnalysisTime, 1055.2ms InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 1595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...