/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:39:06,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:39:06,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:39:06,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:39:06,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:39:06,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:39:06,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:39:06,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:39:06,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:39:06,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:39:06,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:39:06,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:39:06,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:39:06,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:39:06,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:39:06,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:39:06,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:39:06,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:39:06,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:39:06,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:39:06,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:39:06,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:39:06,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:39:06,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:39:06,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:39:06,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:39:06,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:39:06,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:39:06,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:39:06,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:39:06,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:39:06,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:39:06,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:39:06,923 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:39:06,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:39:06,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:39:06,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:39:06,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:39:06,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:39:06,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:39:06,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:39:06,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:39:06,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:39:06,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:39:07,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:39:07,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:39:07,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:39:07,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:39:07,156 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:39:07,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i [2021-03-11 02:39:07,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168c4e3f3/0e4ecc0ccec540dbb39e302e6712677b/FLAG6dc97e4c7 [2021-03-11 02:39:07,631 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:39:07,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.oepc.i [2021-03-11 02:39:07,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168c4e3f3/0e4ecc0ccec540dbb39e302e6712677b/FLAG6dc97e4c7 [2021-03-11 02:39:07,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168c4e3f3/0e4ecc0ccec540dbb39e302e6712677b [2021-03-11 02:39:07,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:39:07,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:39:07,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:39:07,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:39:07,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:39:07,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:39:07" (1/1) ... [2021-03-11 02:39:07,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ff27fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:07, skipping insertion in model container [2021-03-11 02:39:07,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:39:07" (1/1) ... [2021-03-11 02:39:07,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:39:08,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:39:08,097 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/safe037_tso.oepc.i[950,963] [2021-03-11 02:39:08,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:39:08,212 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:39:08,221 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/safe037_tso.oepc.i[950,963] [2021-03-11 02:39:08,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:39:08,285 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:39:08,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08 WrapperNode [2021-03-11 02:39:08,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:39:08,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:39:08,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:39:08,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:39:08,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:39:08,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:39:08,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:39:08,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:39:08,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... [2021-03-11 02:39:08,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:39:08,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:39:08,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:39:08,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:39:08,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:39:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:39:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:39:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:39:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:39:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:39:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:39:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:39:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:39:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:39:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:39:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:39:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:39:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:39:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:39:08,382 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:39:08,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:39:08,717 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:39:08,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:39:08 BoogieIcfgContainer [2021-03-11 02:39:08,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:39:08,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:39:08,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:39:08,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:39:08,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:39:07" (1/3) ... [2021-03-11 02:39:08,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5aebcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:39:08, skipping insertion in model container [2021-03-11 02:39:08,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:39:08" (2/3) ... [2021-03-11 02:39:08,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5aebcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:39:08, skipping insertion in model container [2021-03-11 02:39:08,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:39:08" (3/3) ... [2021-03-11 02:39:08,723 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_tso.oepc.i [2021-03-11 02:39:08,729 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:39:08,732 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:39:08,732 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,774 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,775 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,776 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,776 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:39:08,778 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:39:08,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:39:08,805 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:39:08,805 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:39:08,805 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:39:08,806 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:39:08,806 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:39:08,806 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:39:08,806 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:39:08,806 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:39:08,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-11 02:39:08,833 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-11 02:39:08,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:39:08,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:39:08,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-11 02:39:08,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-11 02:39:08,848 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 02:39:08,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:39:08,866 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:08,867 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:39:08,867 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash 965294801, now seen corresponding path program 1 times [2021-03-11 02:39:08,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:08,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986645239] [2021-03-11 02:39:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:09,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:09,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:09,118 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:39:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:39:09,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:39:09,171 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:39:09,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:09,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:09,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986645239] [2021-03-11 02:39:09,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:09,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:39:09,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239418209] [2021-03-11 02:39:09,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:39:09,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:39:09,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:39:09,207 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-03-11 02:39:09,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:09,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-03-11 02:39:09,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:09,389 INFO L129 PetriNetUnfolder]: 112/314 cut-off events. [2021-03-11 02:39:09,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:39:09,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 314 events. 112/314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1533 event pairs, 2 based on Foata normal form. 15/319 useless extension candidates. Maximal degree in co-relation 498. Up to 81 conditions per place. [2021-03-11 02:39:09,391 INFO L132 encePairwiseOnDemand]: 65/76 looper letters, 10 selfloop transitions, 6 changer transitions 25/90 dead transitions. [2021-03-11 02:39:09,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 271 flow [2021-03-11 02:39:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:39:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:39:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 666 transitions. [2021-03-11 02:39:09,401 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8763157894736842 [2021-03-11 02:39:09,402 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 666 transitions. [2021-03-11 02:39:09,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 666 transitions. [2021-03-11 02:39:09,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:09,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 666 transitions. [2021-03-11 02:39:09,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.6) internal successors, (666), 10 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,414 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,415 INFO L185 Difference]: Start difference. First operand has 70 places, 61 transitions, 131 flow. Second operand 10 states and 666 transitions. [2021-03-11 02:39:09,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 271 flow [2021-03-11 02:39:09,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:39:09,421 INFO L241 Difference]: Finished difference. Result has 82 places, 62 transitions, 180 flow [2021-03-11 02:39:09,422 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=180, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2021-03-11 02:39:09,422 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2021-03-11 02:39:09,422 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 180 flow [2021-03-11 02:39:09,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,423 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:09,423 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:39:09,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:39:09,423 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:09,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1271277523, now seen corresponding path program 1 times [2021-03-11 02:39:09,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:09,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906448640] [2021-03-11 02:39:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:09,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:09,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:09,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:09,473 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:39:09,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:39:09,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:39:09,505 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:39:09,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:09,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:09,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906448640] [2021-03-11 02:39:09,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:09,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:39:09,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102420717] [2021-03-11 02:39:09,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:39:09,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:09,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:39:09,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:39:09,522 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-03-11 02:39:09,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:09,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-03-11 02:39:09,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:09,748 INFO L129 PetriNetUnfolder]: 52/192 cut-off events. [2021-03-11 02:39:09,749 INFO L130 PetriNetUnfolder]: For 279/291 co-relation queries the response was YES. [2021-03-11 02:39:09,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 192 events. 52/192 cut-off events. For 279/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 694 event pairs, 0 based on Foata normal form. 12/202 useless extension candidates. Maximal degree in co-relation 534. Up to 75 conditions per place. [2021-03-11 02:39:09,752 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 10 selfloop transitions, 9 changer transitions 19/87 dead transitions. [2021-03-11 02:39:09,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 433 flow [2021-03-11 02:39:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:39:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:39:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 660 transitions. [2021-03-11 02:39:09,754 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.868421052631579 [2021-03-11 02:39:09,754 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 660 transitions. [2021-03-11 02:39:09,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 660 transitions. [2021-03-11 02:39:09,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:09,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 660 transitions. [2021-03-11 02:39:09,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,758 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,758 INFO L185 Difference]: Start difference. First operand has 82 places, 62 transitions, 180 flow. Second operand 10 states and 660 transitions. [2021-03-11 02:39:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 433 flow [2021-03-11 02:39:09,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 409 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 02:39:09,765 INFO L241 Difference]: Finished difference. Result has 86 places, 65 transitions, 248 flow [2021-03-11 02:39:09,765 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=248, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2021-03-11 02:39:09,766 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2021-03-11 02:39:09,766 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 248 flow [2021-03-11 02:39:09,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,766 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:09,766 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:39:09,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:39:09,767 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:09,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:09,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1446251537, now seen corresponding path program 1 times [2021-03-11 02:39:09,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:09,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836093955] [2021-03-11 02:39:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:09,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:09,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:09,826 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:39:09,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:39:09,836 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:09,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:09,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:09,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:09,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:09,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:09,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836093955] [2021-03-11 02:39:09,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:09,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:39:09,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643595105] [2021-03-11 02:39:09,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:39:09,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:39:09,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:39:09,894 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:39:09,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:09,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:09,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:39:09,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:10,126 INFO L129 PetriNetUnfolder]: 67/354 cut-off events. [2021-03-11 02:39:10,126 INFO L130 PetriNetUnfolder]: For 743/800 co-relation queries the response was YES. [2021-03-11 02:39:10,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 354 events. 67/354 cut-off events. For 743/800 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1957 event pairs, 12 based on Foata normal form. 13/354 useless extension candidates. Maximal degree in co-relation 913. Up to 76 conditions per place. [2021-03-11 02:39:10,132 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 23 selfloop transitions, 4 changer transitions 13/91 dead transitions. [2021-03-11 02:39:10,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 380 flow [2021-03-11 02:39:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:39:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:39:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 622 transitions. [2021-03-11 02:39:10,137 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8184210526315789 [2021-03-11 02:39:10,137 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 622 transitions. [2021-03-11 02:39:10,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 622 transitions. [2021-03-11 02:39:10,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:10,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 622 transitions. [2021-03-11 02:39:10,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.2) internal successors, (622), 10 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,141 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,141 INFO L185 Difference]: Start difference. First operand has 86 places, 65 transitions, 248 flow. Second operand 10 states and 622 transitions. [2021-03-11 02:39:10,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 380 flow [2021-03-11 02:39:10,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 324 flow, removed 20 selfloop flow, removed 9 redundant places. [2021-03-11 02:39:10,146 INFO L241 Difference]: Finished difference. Result has 90 places, 68 transitions, 245 flow [2021-03-11 02:39:10,146 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=245, PETRI_PLACES=90, PETRI_TRANSITIONS=68} [2021-03-11 02:39:10,146 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 20 predicate places. [2021-03-11 02:39:10,146 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 68 transitions, 245 flow [2021-03-11 02:39:10,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:10,147 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:39:10,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:39:10,147 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 989624493, now seen corresponding path program 2 times [2021-03-11 02:39:10,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:10,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608001422] [2021-03-11 02:39:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:10,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:10,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:10,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:10,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:10,216 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:39:10,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:39:10,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:39:10,247 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:39:10,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:10,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:10,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608001422] [2021-03-11 02:39:10,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:10,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:39:10,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843553221] [2021-03-11 02:39:10,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:39:10,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:39:10,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:39:10,259 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-03-11 02:39:10,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 68 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:10,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-03-11 02:39:10,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:10,483 INFO L129 PetriNetUnfolder]: 42/239 cut-off events. [2021-03-11 02:39:10,483 INFO L130 PetriNetUnfolder]: For 383/472 co-relation queries the response was YES. [2021-03-11 02:39:10,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 239 events. 42/239 cut-off events. For 383/472 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1156 event pairs, 2 based on Foata normal form. 48/280 useless extension candidates. Maximal degree in co-relation 645. Up to 65 conditions per place. [2021-03-11 02:39:10,484 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 6 selfloop transitions, 14 changer transitions 9/81 dead transitions. [2021-03-11 02:39:10,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 81 transitions, 390 flow [2021-03-11 02:39:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:39:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:39:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 713 transitions. [2021-03-11 02:39:10,486 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8528708133971292 [2021-03-11 02:39:10,486 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 713 transitions. [2021-03-11 02:39:10,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 713 transitions. [2021-03-11 02:39:10,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:10,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 713 transitions. [2021-03-11 02:39:10,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.81818181818181) internal successors, (713), 11 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,489 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,489 INFO L185 Difference]: Start difference. First operand has 90 places, 68 transitions, 245 flow. Second operand 11 states and 713 transitions. [2021-03-11 02:39:10,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 81 transitions, 390 flow [2021-03-11 02:39:10,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 81 transitions, 359 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-11 02:39:10,491 INFO L241 Difference]: Finished difference. Result has 96 places, 71 transitions, 295 flow [2021-03-11 02:39:10,492 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=295, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2021-03-11 02:39:10,492 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2021-03-11 02:39:10,492 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 295 flow [2021-03-11 02:39:10,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:10,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:39:10,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:39:10,492 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1156937905, now seen corresponding path program 1 times [2021-03-11 02:39:10,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:10,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601558251] [2021-03-11 02:39:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:10,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:10,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:10,524 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:39:10,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:39:10,533 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:10,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:10,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:10,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:10,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:10,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601558251] [2021-03-11 02:39:10,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:10,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:39:10,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884704038] [2021-03-11 02:39:10,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:39:10,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:10,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:39:10,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:39:10,574 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:39:10,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 295 flow. Second operand has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 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) [2021-03-11 02:39:10,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:10,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:39:10,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:10,709 INFO L129 PetriNetUnfolder]: 39/286 cut-off events. [2021-03-11 02:39:10,709 INFO L130 PetriNetUnfolder]: For 534/552 co-relation queries the response was YES. [2021-03-11 02:39:10,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 286 events. 39/286 cut-off events. For 534/552 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1597 event pairs, 0 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 768. Up to 64 conditions per place. [2021-03-11 02:39:10,711 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 18 selfloop transitions, 5 changer transitions 4/81 dead transitions. [2021-03-11 02:39:10,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 81 transitions, 401 flow [2021-03-11 02:39:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:39:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:39:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2021-03-11 02:39:10,714 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.806390977443609 [2021-03-11 02:39:10,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2021-03-11 02:39:10,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2021-03-11 02:39:10,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:10,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2021-03-11 02:39:10,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,717 INFO L185 Difference]: Start difference. First operand has 96 places, 71 transitions, 295 flow. Second operand 7 states and 429 transitions. [2021-03-11 02:39:10,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 81 transitions, 401 flow [2021-03-11 02:39:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 331 flow, removed 28 selfloop flow, removed 11 redundant places. [2021-03-11 02:39:10,722 INFO L241 Difference]: Finished difference. Result has 94 places, 75 transitions, 292 flow [2021-03-11 02:39:10,722 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2021-03-11 02:39:10,722 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 24 predicate places. [2021-03-11 02:39:10,722 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 292 flow [2021-03-11 02:39:10,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 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) [2021-03-11 02:39:10,722 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:39:10,723 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:39:10,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:39:10,723 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:39:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:39:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1373001163, now seen corresponding path program 2 times [2021-03-11 02:39:10,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:39:10,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739373662] [2021-03-11 02:39:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:39:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:39:10,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:10,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:39:10,781 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:39:10,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:39:10,797 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:39:10,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:39:10,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:10,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:39:10,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:39:10,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:39:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:39:10,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739373662] [2021-03-11 02:39:10,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:39:10,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:39:10,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572580937] [2021-03-11 02:39:10,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:39:10,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:39:10,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:39:10,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:39:10,847 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:39:10,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 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) [2021-03-11 02:39:10,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:39:10,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:39:10,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:39:10,967 INFO L129 PetriNetUnfolder]: 47/328 cut-off events. [2021-03-11 02:39:10,967 INFO L130 PetriNetUnfolder]: For 276/326 co-relation queries the response was YES. [2021-03-11 02:39:10,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 328 events. 47/328 cut-off events. For 276/326 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2061 event pairs, 0 based on Foata normal form. 5/326 useless extension candidates. Maximal degree in co-relation 782. Up to 39 conditions per place. [2021-03-11 02:39:10,969 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2021-03-11 02:39:10,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 80 transitions, 388 flow [2021-03-11 02:39:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:39:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:39:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2021-03-11 02:39:10,970 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7969924812030075 [2021-03-11 02:39:10,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 424 transitions. [2021-03-11 02:39:10,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 424 transitions. [2021-03-11 02:39:10,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:39:10,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 424 transitions. [2021-03-11 02:39:10,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,974 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:39:10,974 INFO L185 Difference]: Start difference. First operand has 94 places, 75 transitions, 292 flow. Second operand 7 states and 424 transitions. [2021-03-11 02:39:10,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 80 transitions, 388 flow [2021-03-11 02:39:10,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 80 transitions, 365 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-11 02:39:10,977 INFO L241 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-03-11 02:39:10,977 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-03-11 02:39:10,978 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 20 predicate places. [2021-03-11 02:39:10,978 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-03-11 02:39:10,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 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) [2021-03-11 02:39:10,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:39:10,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:39:10 BasicIcfg [2021-03-11 02:39:10,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:39:10,983 INFO L168 Benchmark]: Toolchain (without parser) took 3012.43 ms. Allocated memory was 255.9 MB in the beginning and 474.0 MB in the end (delta: 218.1 MB). Free memory was 234.6 MB in the beginning and 416.9 MB in the end (delta: -182.3 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:10,983 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:39:10,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.48 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 233.9 MB in the beginning and 353.6 MB in the end (delta: -119.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:10,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.69 ms. Allocated memory is still 390.1 MB. Free memory was 353.6 MB in the beginning and 352.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:10,987 INFO L168 Benchmark]: Boogie Preprocessor took 12.33 ms. Allocated memory is still 390.1 MB. Free memory was 351.5 MB in the beginning and 350.8 MB in the end (delta: 735.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:10,987 INFO L168 Benchmark]: RCFGBuilder took 396.63 ms. Allocated memory is still 390.1 MB. Free memory was 350.0 MB in the beginning and 328.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:39:10,988 INFO L168 Benchmark]: TraceAbstraction took 2262.44 ms. Allocated memory was 390.1 MB in the beginning and 474.0 MB in the end (delta: 83.9 MB). Free memory was 327.7 MB in the beginning and 416.9 MB in the end (delta: -89.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:39:10,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 312.48 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 233.9 MB in the beginning and 353.6 MB in the end (delta: -119.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.69 ms. Allocated memory is still 390.1 MB. Free memory was 353.6 MB in the beginning and 352.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.33 ms. Allocated memory is still 390.1 MB. Free memory was 351.5 MB in the beginning and 350.8 MB in the end (delta: 735.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 396.63 ms. Allocated memory is still 390.1 MB. Free memory was 350.0 MB in the beginning and 328.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2262.44 ms. Allocated memory was 390.1 MB in the beginning and 474.0 MB in the end (delta: 83.9 MB). Free memory was 327.7 MB in the beginning and 416.9 MB in the end (delta: -89.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 27.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2176.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1233.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 119 SDslu, 230 SDs, 0 SdLazy, 273 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 269.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 867.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=4, InterpolantAutomatonStates: 55, 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: 21.1ms SsaConstructionTime, 139.9ms SatisfiabilityAnalysisTime, 599.7ms InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 1050 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...