/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:52:20,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:52:20,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:52:20,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:52:20,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:52:20,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:52:20,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:52:20,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:52:20,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:52:20,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:52:20,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:52:20,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:52:20,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:52:20,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:52:20,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:52:20,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:52:20,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:52:20,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:52:20,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:52:20,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:52:20,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:52:20,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:52:20,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:52:20,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:52:20,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:52:20,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:52:20,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:52:20,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:52:20,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:52:20,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:52:20,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:52:20,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:52:20,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:52:20,902 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:52:20,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:52:20,903 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:52:20,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:52:20,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:52:20,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:52:20,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:52:20,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:52:20,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:52:20,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:52:20,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:52:20,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:52:20,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:52:20,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:52:20,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:52:20,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:52:20,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:52:20,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:52:20,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:52:20,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:52:20,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:52:20,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:52:20,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:52:20,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:52:20,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:52:21,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:52:21,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:52:21,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:52:21,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:52:21,214 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:52:21,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-03-24 19:52:21,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fe1bcfa/007e25ada43c453399e65458f9319d68/FLAG3095c8e71 [2021-03-24 19:52:21,771 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:52:21,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-03-24 19:52:21,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fe1bcfa/007e25ada43c453399e65458f9319d68/FLAG3095c8e71 [2021-03-24 19:52:22,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6fe1bcfa/007e25ada43c453399e65458f9319d68 [2021-03-24 19:52:22,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:52:22,252 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:52:22,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:52:22,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:52:22,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:52:22,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a413450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22, skipping insertion in model container [2021-03-24 19:52:22,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:52:22,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:52:22,434 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/safe013_tso.opt.i[949,962] [2021-03-24 19:52:22,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:52:22,598 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:52:22,608 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/safe013_tso.opt.i[949,962] [2021-03-24 19:52:22,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:52:22,683 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:52:22,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22 WrapperNode [2021-03-24 19:52:22,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:52:22,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:52:22,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:52:22,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:52:22,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:52:22,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:52:22,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:52:22,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:52:22,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (1/1) ... [2021-03-24 19:52:22,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:52:22,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:52:22,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:52:22,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:52:22,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (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 [2021-03-24 19:52:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:52:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:52:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:52:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:52:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:52:22,793 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:52:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:52:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:52:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:52:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:52:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:52:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:52:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:52:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:52:22,795 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:52:23,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:52:23,060 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:52:23,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:52:23 BoogieIcfgContainer [2021-03-24 19:52:23,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:52:23,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:52:23,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:52:23,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:52:23,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:52:22" (1/3) ... [2021-03-24 19:52:23,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3eb668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:52:23, skipping insertion in model container [2021-03-24 19:52:23,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:22" (2/3) ... [2021-03-24 19:52:23,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3eb668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:52:23, skipping insertion in model container [2021-03-24 19:52:23,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:52:23" (3/3) ... [2021-03-24 19:52:23,068 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2021-03-24 19:52:23,072 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:52:23,076 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:52:23,077 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:52:23,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,102 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,102 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,102 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,102 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,106 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,106 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:23,117 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:52:23,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:52:23,149 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:52:23,150 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:52:23,150 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:52:23,150 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:52:23,150 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:52:23,150 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:52:23,150 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:52:23,150 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:52:23,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:52:23,187 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 19:52:23,187 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:23,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:52:23,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:52:23,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:23,195 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:52:23,205 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:23,207 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:23,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 19:52:23,223 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 19:52:23,223 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:23,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:52:23,225 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:52:24,934 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-24 19:52:24,934 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-24 19:52:24,936 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1742 [2021-03-24 19:52:24,944 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 19:52:24,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:24,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:24,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:24,945 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:24,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:24,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2143165953, now seen corresponding path program 1 times [2021-03-24 19:52:24,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:24,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350823181] [2021-03-24 19:52:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:25,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:25,243 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:52:25,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:52:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:25,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350823181] [2021-03-24 19:52:25,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:25,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:52:25,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841394679] [2021-03-24 19:52:25,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:25,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:25,283 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-03-24 19:52:25,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-24 19:52:25,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:25,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-03-24 19:52:25,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:25,327 INFO L129 PetriNetUnfolder]: 8/50 cut-off events. [2021-03-24 19:52:25,331 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:25,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 50 events. 8/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 2 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 75. Up to 19 conditions per place. [2021-03-24 19:52:25,334 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 6 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-24 19:52:25,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 83 flow [2021-03-24 19:52:25,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:52:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:52:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2021-03-24 19:52:25,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8429203539823009 [2021-03-24 19:52:25,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2021-03-24 19:52:25,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2021-03-24 19:52:25,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:25,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2021-03-24 19:52:25,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-24 19:52:25,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:25,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:25,379 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 381 transitions. [2021-03-24 19:52:25,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 83 flow [2021-03-24 19:52:25,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:25,383 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 77 flow [2021-03-24 19:52:25,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-24 19:52:25,385 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2021-03-24 19:52:25,385 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 77 flow [2021-03-24 19:52:25,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-03-24 19:52:25,385 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:25,385 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:25,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:52:25,386 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2018613826, now seen corresponding path program 1 times [2021-03-24 19:52:25,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:25,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748857238] [2021-03-24 19:52:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:25,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:25,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:25,461 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:52:25,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:52:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:25,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748857238] [2021-03-24 19:52:25,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:25,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:25,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174058076] [2021-03-24 19:52:25,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:25,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:25,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:25,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:25,479 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 113 [2021-03-24 19:52:25,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-03-24 19:52:25,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:25,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 113 [2021-03-24 19:52:25,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:25,540 INFO L129 PetriNetUnfolder]: 35/117 cut-off events. [2021-03-24 19:52:25,540 INFO L130 PetriNetUnfolder]: For 93/223 co-relation queries the response was YES. [2021-03-24 19:52:25,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 117 events. 35/117 cut-off events. For 93/223 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 487 event pairs, 1 based on Foata normal form. 4/117 useless extension candidates. Maximal degree in co-relation 269. Up to 35 conditions per place. [2021-03-24 19:52:25,542 INFO L132 encePairwiseOnDemand]: 105/113 looper letters, 9 selfloop transitions, 16 changer transitions 0/39 dead transitions. [2021-03-24 19:52:25,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 195 flow [2021-03-24 19:52:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:52:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:52:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-03-24 19:52:25,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8371681415929203 [2021-03-24 19:52:25,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-03-24 19:52:25,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-03-24 19:52:25,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:25,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-03-24 19:52:25,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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) [2021-03-24 19:52:25,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 19:52:25,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 19:52:25,548 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 77 flow. Second operand 5 states and 473 transitions. [2021-03-24 19:52:25,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 195 flow [2021-03-24 19:52:25,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:52:25,550 INFO L241 Difference]: Finished difference. Result has 40 places, 35 transitions, 192 flow [2021-03-24 19:52:25,550 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2021-03-24 19:52:25,550 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-24 19:52:25,551 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 192 flow [2021-03-24 19:52:25,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-03-24 19:52:25,551 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:25,551 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:25,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:52:25,551 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:25,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1838808027, now seen corresponding path program 1 times [2021-03-24 19:52:25,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:25,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436237164] [2021-03-24 19:52:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:25,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:25,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:25,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:25,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436237164] [2021-03-24 19:52:25,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:25,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:25,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856934301] [2021-03-24 19:52:25,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:25,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:25,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:25,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:25,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2021-03-24 19:52:25,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-24 19:52:25,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:25,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2021-03-24 19:52:25,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:25,638 INFO L129 PetriNetUnfolder]: 18/97 cut-off events. [2021-03-24 19:52:25,639 INFO L130 PetriNetUnfolder]: For 229/402 co-relation queries the response was YES. [2021-03-24 19:52:25,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 97 events. 18/97 cut-off events. For 229/402 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 427 event pairs, 4 based on Foata normal form. 10/104 useless extension candidates. Maximal degree in co-relation 281. Up to 30 conditions per place. [2021-03-24 19:52:25,644 INFO L132 encePairwiseOnDemand]: 108/113 looper letters, 1 selfloop transitions, 6 changer transitions 8/36 dead transitions. [2021-03-24 19:52:25,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 217 flow [2021-03-24 19:52:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:52:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:52:25,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-03-24 19:52:25,646 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8672566371681416 [2021-03-24 19:52:25,646 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-03-24 19:52:25,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-03-24 19:52:25,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:25,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-03-24 19:52:25,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2021-03-24 19:52:25,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:25,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:25,657 INFO L185 Difference]: Start difference. First operand has 40 places, 35 transitions, 192 flow. Second operand 4 states and 392 transitions. [2021-03-24 19:52:25,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 217 flow [2021-03-24 19:52:25,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 19:52:25,663 INFO L241 Difference]: Finished difference. Result has 45 places, 28 transitions, 162 flow [2021-03-24 19:52:25,664 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2021-03-24 19:52:25,665 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2021-03-24 19:52:25,665 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 162 flow [2021-03-24 19:52:25,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-24 19:52:25,665 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:25,665 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:25,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:52:25,666 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:25,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:25,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1964511662, now seen corresponding path program 1 times [2021-03-24 19:52:25,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:25,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411965393] [2021-03-24 19:52:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:25,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:25,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:25,740 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:52:25,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:52:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:25,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411965393] [2021-03-24 19:52:25,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:25,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:25,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361373983] [2021-03-24 19:52:25,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:25,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:25,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:25,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:25,751 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-03-24 19:52:25,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-24 19:52:25,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:25,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-03-24 19:52:25,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:25,772 INFO L129 PetriNetUnfolder]: 7/50 cut-off events. [2021-03-24 19:52:25,773 INFO L130 PetriNetUnfolder]: For 114/140 co-relation queries the response was YES. [2021-03-24 19:52:25,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 50 events. 7/50 cut-off events. For 114/140 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 129 event pairs, 3 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 166. Up to 18 conditions per place. [2021-03-24 19:52:25,773 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 4 selfloop transitions, 9 changer transitions 0/29 dead transitions. [2021-03-24 19:52:25,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 29 transitions, 196 flow [2021-03-24 19:52:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:52:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:52:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2021-03-24 19:52:25,775 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8407079646017699 [2021-03-24 19:52:25,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2021-03-24 19:52:25,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2021-03-24 19:52:25,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:25,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2021-03-24 19:52:25,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-03-24 19:52:25,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:25,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:25,778 INFO L185 Difference]: Start difference. First operand has 45 places, 28 transitions, 162 flow. Second operand 4 states and 380 transitions. [2021-03-24 19:52:25,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 29 transitions, 196 flow [2021-03-24 19:52:25,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 163 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-24 19:52:25,781 INFO L241 Difference]: Finished difference. Result has 43 places, 29 transitions, 162 flow [2021-03-24 19:52:25,781 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2021-03-24 19:52:25,781 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2021-03-24 19:52:25,781 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 162 flow [2021-03-24 19:52:25,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-24 19:52:25,782 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:25,782 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:25,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:52:25,782 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash 579387887, now seen corresponding path program 1 times [2021-03-24 19:52:25,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:25,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625581575] [2021-03-24 19:52:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:25,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:25,844 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-24 19:52:25,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:52:25,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:25,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:25,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:25,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625581575] [2021-03-24 19:52:25,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:25,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:25,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098968867] [2021-03-24 19:52:25,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:25,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:25,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:25,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:25,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 113 [2021-03-24 19:52:25,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2021-03-24 19:52:25,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:25,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 113 [2021-03-24 19:52:25,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:25,970 INFO L129 PetriNetUnfolder]: 134/288 cut-off events. [2021-03-24 19:52:25,970 INFO L130 PetriNetUnfolder]: For 186/210 co-relation queries the response was YES. [2021-03-24 19:52:25,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 288 events. 134/288 cut-off events. For 186/210 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1493 event pairs, 21 based on Foata normal form. 20/281 useless extension candidates. Maximal degree in co-relation 676. Up to 130 conditions per place. [2021-03-24 19:52:25,973 INFO L132 encePairwiseOnDemand]: 105/113 looper letters, 12 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2021-03-24 19:52:25,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 238 flow [2021-03-24 19:52:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-24 19:52:25,975 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7661188369152971 [2021-03-24 19:52:25,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-24 19:52:25,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-24 19:52:25,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:25,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-24 19:52:25,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 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) [2021-03-24 19:52:25,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 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) [2021-03-24 19:52:25,980 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 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) [2021-03-24 19:52:25,980 INFO L185 Difference]: Start difference. First operand has 43 places, 29 transitions, 162 flow. Second operand 7 states and 606 transitions. [2021-03-24 19:52:25,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 238 flow [2021-03-24 19:52:25,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 228 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-24 19:52:25,984 INFO L241 Difference]: Finished difference. Result has 52 places, 38 transitions, 230 flow [2021-03-24 19:52:25,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2021-03-24 19:52:25,985 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2021-03-24 19:52:25,985 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 230 flow [2021-03-24 19:52:25,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2021-03-24 19:52:25,985 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:25,985 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:25,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:52:25,985 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1267850383, now seen corresponding path program 1 times [2021-03-24 19:52:25,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:25,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438320776] [2021-03-24 19:52:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:26,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,036 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:52:26,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:52:26,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:26,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438320776] [2021-03-24 19:52:26,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:26,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:52:26,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540939588] [2021-03-24 19:52:26,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:52:26,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:26,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:52:26,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:52:26,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 113 [2021-03-24 19:52:26,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2021-03-24 19:52:26,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:26,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 113 [2021-03-24 19:52:26,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:26,163 INFO L129 PetriNetUnfolder]: 111/263 cut-off events. [2021-03-24 19:52:26,164 INFO L130 PetriNetUnfolder]: For 514/681 co-relation queries the response was YES. [2021-03-24 19:52:26,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 263 events. 111/263 cut-off events. For 514/681 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1373 event pairs, 1 based on Foata normal form. 55/293 useless extension candidates. Maximal degree in co-relation 1002. Up to 148 conditions per place. [2021-03-24 19:52:26,167 INFO L132 encePairwiseOnDemand]: 105/113 looper letters, 10 selfloop transitions, 20 changer transitions 3/54 dead transitions. [2021-03-24 19:52:26,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 387 flow [2021-03-24 19:52:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:52:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:52:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 780 transitions. [2021-03-24 19:52:26,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7669616519174042 [2021-03-24 19:52:26,169 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 780 transitions. [2021-03-24 19:52:26,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 780 transitions. [2021-03-24 19:52:26,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:26,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 780 transitions. [2021-03-24 19:52:26,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 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) [2021-03-24 19:52:26,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2021-03-24 19:52:26,173 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2021-03-24 19:52:26,173 INFO L185 Difference]: Start difference. First operand has 52 places, 38 transitions, 230 flow. Second operand 9 states and 780 transitions. [2021-03-24 19:52:26,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 387 flow [2021-03-24 19:52:26,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 370 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:26,177 INFO L241 Difference]: Finished difference. Result has 61 places, 48 transitions, 355 flow [2021-03-24 19:52:26,177 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=355, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2021-03-24 19:52:26,178 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2021-03-24 19:52:26,178 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 355 flow [2021-03-24 19:52:26,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2021-03-24 19:52:26,178 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:26,178 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:26,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:52:26,178 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:26,179 INFO L82 PathProgramCache]: Analyzing trace with hash -596356650, now seen corresponding path program 1 times [2021-03-24 19:52:26,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:26,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41202463] [2021-03-24 19:52:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:26,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:26,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:26,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41202463] [2021-03-24 19:52:26,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:26,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:26,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852640927] [2021-03-24 19:52:26,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:26,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:26,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:26,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:26,244 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2021-03-24 19:52:26,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 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) [2021-03-24 19:52:26,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:26,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2021-03-24 19:52:26,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:26,298 INFO L129 PetriNetUnfolder]: 125/321 cut-off events. [2021-03-24 19:52:26,298 INFO L130 PetriNetUnfolder]: For 1230/1379 co-relation queries the response was YES. [2021-03-24 19:52:26,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 321 events. 125/321 cut-off events. For 1230/1379 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1890 event pairs, 4 based on Foata normal form. 16/299 useless extension candidates. Maximal degree in co-relation 1438. Up to 186 conditions per place. [2021-03-24 19:52:26,302 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 4 selfloop transitions, 2 changer transitions 17/49 dead transitions. [2021-03-24 19:52:26,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 49 transitions, 375 flow [2021-03-24 19:52:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:52:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:52:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-24 19:52:26,304 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8650442477876106 [2021-03-24 19:52:26,304 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-24 19:52:26,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-24 19:52:26,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:26,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-24 19:52:26,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-24 19:52:26,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:26,307 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 19:52:26,307 INFO L185 Difference]: Start difference. First operand has 61 places, 48 transitions, 355 flow. Second operand 4 states and 391 transitions. [2021-03-24 19:52:26,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 49 transitions, 375 flow [2021-03-24 19:52:26,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 338 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:26,316 INFO L241 Difference]: Finished difference. Result has 63 places, 32 transitions, 210 flow [2021-03-24 19:52:26,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=63, PETRI_TRANSITIONS=32} [2021-03-24 19:52:26,316 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2021-03-24 19:52:26,316 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 32 transitions, 210 flow [2021-03-24 19:52:26,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 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) [2021-03-24 19:52:26,317 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:26,317 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:26,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:52:26,317 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash 692012116, now seen corresponding path program 2 times [2021-03-24 19:52:26,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:26,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308621790] [2021-03-24 19:52:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:26,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,386 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:52:26,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:52:26,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:26,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:26,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:26,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308621790] [2021-03-24 19:52:26,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:26,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:52:26,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316802716] [2021-03-24 19:52:26,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:52:26,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:26,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:52:26,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:52:26,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 113 [2021-03-24 19:52:26,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 32 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2021-03-24 19:52:26,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:26,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 113 [2021-03-24 19:52:26,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:26,504 INFO L129 PetriNetUnfolder]: 24/113 cut-off events. [2021-03-24 19:52:26,504 INFO L130 PetriNetUnfolder]: For 459/513 co-relation queries the response was YES. [2021-03-24 19:52:26,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 113 events. 24/113 cut-off events. For 459/513 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 504 event pairs, 1 based on Foata normal form. 43/151 useless extension candidates. Maximal degree in co-relation 478. Up to 41 conditions per place. [2021-03-24 19:52:26,505 INFO L132 encePairwiseOnDemand]: 105/113 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2021-03-24 19:52:26,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 36 transitions, 272 flow [2021-03-24 19:52:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:52:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:52:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 767 transitions. [2021-03-24 19:52:26,507 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7541789577187807 [2021-03-24 19:52:26,507 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 767 transitions. [2021-03-24 19:52:26,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 767 transitions. [2021-03-24 19:52:26,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:26,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 767 transitions. [2021-03-24 19:52:26,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.22222222222223) internal successors, (767), 9 states have internal predecessors, (767), 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) [2021-03-24 19:52:26,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2021-03-24 19:52:26,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2021-03-24 19:52:26,512 INFO L185 Difference]: Start difference. First operand has 63 places, 32 transitions, 210 flow. Second operand 9 states and 767 transitions. [2021-03-24 19:52:26,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 36 transitions, 272 flow [2021-03-24 19:52:26,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 36 transitions, 205 flow, removed 16 selfloop flow, removed 13 redundant places. [2021-03-24 19:52:26,515 INFO L241 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2021-03-24 19:52:26,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2021-03-24 19:52:26,515 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2021-03-24 19:52:26,516 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2021-03-24 19:52:26,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2021-03-24 19:52:26,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:52:26,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:52:26 BasicIcfg [2021-03-24 19:52:26,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:52:26,525 INFO L168 Benchmark]: Toolchain (without parser) took 4268.64 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 234.6 MB in the beginning and 259.4 MB in the end (delta: -24.8 MB). Peak memory consumption was 117.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:26,525 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 174.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:52:26,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.86 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 234.6 MB in the beginning and 360.5 MB in the end (delta: -126.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:26,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 398.5 MB. Free memory was 360.5 MB in the beginning and 358.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:26,527 INFO L168 Benchmark]: Boogie Preprocessor took 18.31 ms. Allocated memory is still 398.5 MB. Free memory was 358.4 MB in the beginning and 357.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:26,528 INFO L168 Benchmark]: RCFGBuilder took 324.82 ms. Allocated memory is still 398.5 MB. Free memory was 357.1 MB in the beginning and 373.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:26,529 INFO L168 Benchmark]: TraceAbstraction took 3457.17 ms. Allocated memory is still 398.5 MB. Free memory was 372.7 MB in the beginning and 259.4 MB in the end (delta: 113.4 MB). Peak memory consumption was 112.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:26,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 174.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 430.86 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 234.6 MB in the beginning and 360.5 MB in the end (delta: -126.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 398.5 MB. Free memory was 360.5 MB in the beginning and 358.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.31 ms. Allocated memory is still 398.5 MB. Free memory was 358.4 MB in the beginning and 357.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 324.82 ms. Allocated memory is still 398.5 MB. Free memory was 357.1 MB in the beginning and 373.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3457.17 ms. Allocated memory is still 398.5 MB. Free memory was 372.7 MB in the beginning and 259.4 MB in the end (delta: 113.4 MB). Peak memory consumption was 112.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1726.9ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 726, positive: 690, positive conditional: 0, positive unconditional: 690, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 557, positive: 538, positive conditional: 0, positive unconditional: 538, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 557, positive: 538, positive conditional: 0, positive unconditional: 538, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 557, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 146, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 726, positive: 152, positive conditional: 0, positive unconditional: 152, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 557, unknown conditional: 0, unknown unconditional: 557] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3371.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 693.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1790.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 40 SDslu, 50 SDs, 0 SdLazy, 129 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 218.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=6, InterpolantAutomatonStates: 46, 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: 23.5ms SsaConstructionTime, 179.4ms SatisfiabilityAnalysisTime, 496.2ms InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...