/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/safe012_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:50:54,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:50:54,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:50:54,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:50:54,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:50:54,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:50:54,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:50:54,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:50:54,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:50:54,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:50:54,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:50:54,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:50:54,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:50:54,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:50:54,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:50:54,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:50:54,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:50:54,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:50:54,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:50:54,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:50:54,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:50:54,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:50:54,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:50:54,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:50:54,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:50:54,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:50:54,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:50:54,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:50:54,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:50:54,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 22:50:54,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:50:54,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:50:54,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:50:54,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:50:54,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:50:54,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:50:54,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:50:54,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:50:54,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:50:54,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:50:54,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:50:54,916 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 [2022-01-18 22:50:54,968 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:50:54,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:50:54,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:50:54,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:50:54,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:50:54,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:50:54,970 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:50:54,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:50:54,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:50:54,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:50:54,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:50:54,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:50:54,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:50:54,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:50:54,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:50:54,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:50:54,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:50:54,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:50:54,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:50:54,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:50:54,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:50:54,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:50:54,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:50:54,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:50:54,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:50:55,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:50:55,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:50:55,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:50:55,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:50:55,195 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:50:55,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2022-01-18 22:50:55,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c277cdb8/388fc3a36a024127a28d9eeb66f3275b/FLAGff7e67c90 [2022-01-18 22:50:55,618 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:50:55,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2022-01-18 22:50:55,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c277cdb8/388fc3a36a024127a28d9eeb66f3275b/FLAGff7e67c90 [2022-01-18 22:50:55,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c277cdb8/388fc3a36a024127a28d9eeb66f3275b [2022-01-18 22:50:55,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:50:55,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:50:55,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:50:55,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:50:55,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:50:55,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:50:55" (1/1) ... [2022-01-18 22:50:55,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2572bb90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:55, skipping insertion in model container [2022-01-18 22:50:55,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:50:55" (1/1) ... [2022-01-18 22:50:55,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:50:55,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:50:55,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i[945,958] [2022-01-18 22:50:55,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:50:55,965 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:50:55,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i[945,958] [2022-01-18 22:50:55,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:50:56,019 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:50:56,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56 WrapperNode [2022-01-18 22:50:56,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:50:56,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:50:56,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:50:56,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:50:56,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,047 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-01-18 22:50:56,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:50:56,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:50:56,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:50:56,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:50:56,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:50:56,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:50:56,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:50:56,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:50:56,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (1/1) ... [2022-01-18 22:50:56,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:50:56,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:50:56,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 22:50:56,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 22:50:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:50:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:50:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:50:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:50:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:50:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:50:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:50:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:50:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:50:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 22:50:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 22:50:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:50:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:50:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:50:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:50:56,116 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:50:56,240 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:50:56,241 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:50:56,372 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:50:56,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:50:56,376 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:50:56,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:50:56 BoogieIcfgContainer [2022-01-18 22:50:56,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:50:56,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:50:56,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:50:56,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:50:56,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:50:55" (1/3) ... [2022-01-18 22:50:56,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dac7432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:50:56, skipping insertion in model container [2022-01-18 22:50:56,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:56" (2/3) ... [2022-01-18 22:50:56,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dac7432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:50:56, skipping insertion in model container [2022-01-18 22:50:56,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:50:56" (3/3) ... [2022-01-18 22:50:56,386 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2022-01-18 22:50:56,389 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:50:56,389 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:50:56,389 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:50:56,422 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,423 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,424 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,424 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,424 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,424 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,424 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,425 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,425 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,425 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,425 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,425 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,425 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,425 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,426 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,426 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,426 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,426 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,426 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,427 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,427 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,427 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,427 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,427 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,427 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,429 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,429 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,429 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,429 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,433 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,433 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,433 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,433 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,435 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,435 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,435 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,435 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,436 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,436 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,436 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,436 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:56,437 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:50:56,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:50:56,479 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:50:56,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 22:50:56,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-01-18 22:50:56,526 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2022-01-18 22:50:56,527 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:50:56,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-18 22:50:56,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-01-18 22:50:56,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-01-18 22:50:56,551 INFO L129 PetriNetUnfolder]: 1/75 cut-off events. [2022-01-18 22:50:56,552 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:50:56,552 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:56,552 INFO L254 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, 1, 1, 1] [2022-01-18 22:50:56,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1681563862, now seen corresponding path program 1 times [2022-01-18 22:50:56,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:56,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192070823] [2022-01-18 22:50:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:56,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:56,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:56,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192070823] [2022-01-18 22:50:56,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192070823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:56,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:56,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:50:56,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753713676] [2022-01-18 22:50:56,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:56,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:50:56,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:50:56,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:50:56,961 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-01-18 22:50:56,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2022-01-18 22:50:56,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:56,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-01-18 22:50:56,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:57,099 INFO L129 PetriNetUnfolder]: 54/236 cut-off events. [2022-01-18 22:50:57,100 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-18 22:50:57,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 236 events. 54/236 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 875 event pairs, 22 based on Foata normal form. 8/236 useless extension candidates. Maximal degree in co-relation 336. Up to 67 conditions per place. [2022-01-18 22:50:57,102 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 14 selfloop transitions, 5 changer transitions 22/101 dead transitions. [2022-01-18 22:50:57,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 299 flow [2022-01-18 22:50:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:50:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:50:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2022-01-18 22:50:57,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2022-01-18 22:50:57,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 711 transitions. [2022-01-18 22:50:57,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 711 transitions. [2022-01-18 22:50:57,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:57,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 711 transitions. [2022-01-18 22:50:57,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 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) [2022-01-18 22:50:57,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-01-18 22:50:57,130 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-01-18 22:50:57,131 INFO L186 Difference]: Start difference. First operand has 85 places, 76 transitions, 161 flow. Second operand 9 states and 711 transitions. [2022-01-18 22:50:57,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 299 flow [2022-01-18 22:50:57,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-18 22:50:57,136 INFO L242 Difference]: Finished difference. Result has 97 places, 77 transitions, 205 flow [2022-01-18 22:50:57,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=205, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2022-01-18 22:50:57,139 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places. [2022-01-18 22:50:57,139 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 205 flow [2022-01-18 22:50:57,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2022-01-18 22:50:57,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:57,139 INFO L254 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, 1, 1, 1, 1, 1] [2022-01-18 22:50:57,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:50:57,140 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1200547319, now seen corresponding path program 1 times [2022-01-18 22:50:57,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:57,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47095393] [2022-01-18 22:50:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:57,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:57,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:57,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47095393] [2022-01-18 22:50:57,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47095393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:57,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:57,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:57,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621804664] [2022-01-18 22:50:57,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:57,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:57,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:57,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-01-18 22:50:57,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-01-18 22:50:57,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:57,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-01-18 22:50:57,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:57,559 INFO L129 PetriNetUnfolder]: 97/378 cut-off events. [2022-01-18 22:50:57,560 INFO L130 PetriNetUnfolder]: For 326/354 co-relation queries the response was YES. [2022-01-18 22:50:57,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 378 events. 97/378 cut-off events. For 326/354 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1775 event pairs, 7 based on Foata normal form. 8/378 useless extension candidates. Maximal degree in co-relation 766. Up to 53 conditions per place. [2022-01-18 22:50:57,563 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 29 selfloop transitions, 11 changer transitions 38/136 dead transitions. [2022-01-18 22:50:57,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 621 flow [2022-01-18 22:50:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 22:50:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-18 22:50:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1305 transitions. [2022-01-18 22:50:57,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.825426944971537 [2022-01-18 22:50:57,566 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1305 transitions. [2022-01-18 22:50:57,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1305 transitions. [2022-01-18 22:50:57,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:57,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1305 transitions. [2022-01-18 22:50:57,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.76470588235294) internal successors, (1305), 17 states have internal predecessors, (1305), 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) [2022-01-18 22:50:57,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2022-01-18 22:50:57,572 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2022-01-18 22:50:57,572 INFO L186 Difference]: Start difference. First operand has 97 places, 77 transitions, 205 flow. Second operand 17 states and 1305 transitions. [2022-01-18 22:50:57,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 621 flow [2022-01-18 22:50:57,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 576 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-01-18 22:50:57,577 INFO L242 Difference]: Finished difference. Result has 118 places, 82 transitions, 313 flow [2022-01-18 22:50:57,577 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=313, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2022-01-18 22:50:57,578 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2022-01-18 22:50:57,578 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 313 flow [2022-01-18 22:50:57,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-01-18 22:50:57,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:57,583 INFO L254 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, 1, 1, 1, 1, 1] [2022-01-18 22:50:57,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:50:57,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1976276855, now seen corresponding path program 1 times [2022-01-18 22:50:57,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67937062] [2022-01-18 22:50:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:57,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:57,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:57,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67937062] [2022-01-18 22:50:57,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67937062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:57,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:57,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:57,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489454807] [2022-01-18 22:50:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:57,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:57,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:57,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-01-18 22:50:57,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2022-01-18 22:50:57,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:57,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-01-18 22:50:57,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:57,807 INFO L129 PetriNetUnfolder]: 34/192 cut-off events. [2022-01-18 22:50:57,807 INFO L130 PetriNetUnfolder]: For 903/961 co-relation queries the response was YES. [2022-01-18 22:50:57,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 192 events. 34/192 cut-off events. For 903/961 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 623 event pairs, 6 based on Foata normal form. 8/195 useless extension candidates. Maximal degree in co-relation 597. Up to 43 conditions per place. [2022-01-18 22:50:57,814 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 19 selfloop transitions, 4 changer transitions 22/106 dead transitions. [2022-01-18 22:50:57,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 636 flow [2022-01-18 22:50:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:50:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:50:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2022-01-18 22:50:57,819 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8351254480286738 [2022-01-18 22:50:57,819 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2022-01-18 22:50:57,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2022-01-18 22:50:57,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:57,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2022-01-18 22:50:57,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 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) [2022-01-18 22:50:57,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-01-18 22:50:57,823 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-01-18 22:50:57,823 INFO L186 Difference]: Start difference. First operand has 118 places, 82 transitions, 313 flow. Second operand 9 states and 699 transitions. [2022-01-18 22:50:57,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 636 flow [2022-01-18 22:50:57,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 544 flow, removed 42 selfloop flow, removed 10 redundant places. [2022-01-18 22:50:57,833 INFO L242 Difference]: Finished difference. Result has 111 places, 82 transitions, 304 flow [2022-01-18 22:50:57,833 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=111, PETRI_TRANSITIONS=82} [2022-01-18 22:50:57,835 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 26 predicate places. [2022-01-18 22:50:57,835 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 82 transitions, 304 flow [2022-01-18 22:50:57,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2022-01-18 22:50:57,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:57,836 INFO L254 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, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:57,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:50:57,837 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash -772166055, now seen corresponding path program 1 times [2022-01-18 22:50:57,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:57,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932587961] [2022-01-18 22:50:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:57,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:57,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932587961] [2022-01-18 22:50:57,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932587961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:57,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:57,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:57,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474039078] [2022-01-18 22:50:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:57,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:57,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:57,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:57,955 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2022-01-18 22:50:57,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 82 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 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) [2022-01-18 22:50:57,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:57,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2022-01-18 22:50:57,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:58,059 INFO L129 PetriNetUnfolder]: 16/136 cut-off events. [2022-01-18 22:50:58,059 INFO L130 PetriNetUnfolder]: For 373/433 co-relation queries the response was YES. [2022-01-18 22:50:58,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 136 events. 16/136 cut-off events. For 373/433 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 299 event pairs, 4 based on Foata normal form. 2/132 useless extension candidates. Maximal degree in co-relation 356. Up to 25 conditions per place. [2022-01-18 22:50:58,062 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 16 selfloop transitions, 6 changer transitions 10/93 dead transitions. [2022-01-18 22:50:58,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 93 transitions, 482 flow [2022-01-18 22:50:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:50:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:50:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 769 transitions. [2022-01-18 22:50:58,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8268817204301075 [2022-01-18 22:50:58,064 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 769 transitions. [2022-01-18 22:50:58,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 769 transitions. [2022-01-18 22:50:58,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:58,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 769 transitions. [2022-01-18 22:50:58,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.9) internal successors, (769), 10 states have internal predecessors, (769), 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) [2022-01-18 22:50:58,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-01-18 22:50:58,067 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-01-18 22:50:58,068 INFO L186 Difference]: Start difference. First operand has 111 places, 82 transitions, 304 flow. Second operand 10 states and 769 transitions. [2022-01-18 22:50:58,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 93 transitions, 482 flow [2022-01-18 22:50:58,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 93 transitions, 416 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-01-18 22:50:58,074 INFO L242 Difference]: Finished difference. Result has 112 places, 82 transitions, 296 flow [2022-01-18 22:50:58,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2022-01-18 22:50:58,075 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 27 predicate places. [2022-01-18 22:50:58,075 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 296 flow [2022-01-18 22:50:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 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) [2022-01-18 22:50:58,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:58,076 INFO L254 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:58,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:50:58,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash -820442422, now seen corresponding path program 1 times [2022-01-18 22:50:58,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:58,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603205836] [2022-01-18 22:50:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:58,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:58,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:58,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603205836] [2022-01-18 22:50:58,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603205836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:58,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:58,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:58,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024380932] [2022-01-18 22:50:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:58,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:58,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:58,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-01-18 22:50:58,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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) [2022-01-18 22:50:58,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:58,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-01-18 22:50:58,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:58,380 INFO L129 PetriNetUnfolder]: 70/373 cut-off events. [2022-01-18 22:50:58,380 INFO L130 PetriNetUnfolder]: For 912/1051 co-relation queries the response was YES. [2022-01-18 22:50:58,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 373 events. 70/373 cut-off events. For 912/1051 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1824 event pairs, 7 based on Foata normal form. 9/370 useless extension candidates. Maximal degree in co-relation 920. Up to 70 conditions per place. [2022-01-18 22:50:58,383 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 29 selfloop transitions, 16 changer transitions 27/131 dead transitions. [2022-01-18 22:50:58,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 818 flow [2022-01-18 22:50:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 22:50:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-18 22:50:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1289 transitions. [2022-01-18 22:50:58,386 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153067678684377 [2022-01-18 22:50:58,386 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1289 transitions. [2022-01-18 22:50:58,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1289 transitions. [2022-01-18 22:50:58,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:58,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1289 transitions. [2022-01-18 22:50:58,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 75.82352941176471) internal successors, (1289), 17 states have internal predecessors, (1289), 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) [2022-01-18 22:50:58,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2022-01-18 22:50:58,391 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2022-01-18 22:50:58,392 INFO L186 Difference]: Start difference. First operand has 112 places, 82 transitions, 296 flow. Second operand 17 states and 1289 transitions. [2022-01-18 22:50:58,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 818 flow [2022-01-18 22:50:58,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 704 flow, removed 48 selfloop flow, removed 11 redundant places. [2022-01-18 22:50:58,396 INFO L242 Difference]: Finished difference. Result has 126 places, 92 transitions, 450 flow [2022-01-18 22:50:58,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=450, PETRI_PLACES=126, PETRI_TRANSITIONS=92} [2022-01-18 22:50:58,396 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2022-01-18 22:50:58,396 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 92 transitions, 450 flow [2022-01-18 22:50:58,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.14285714285714) internal successors, (519), 7 states have internal predecessors, (519), 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) [2022-01-18 22:50:58,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:58,397 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:58,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:50:58,397 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1041133958, now seen corresponding path program 1 times [2022-01-18 22:50:58,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:58,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500892010] [2022-01-18 22:50:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:58,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:58,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:58,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500892010] [2022-01-18 22:50:58,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500892010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:58,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:58,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:50:58,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602128774] [2022-01-18 22:50:58,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:58,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:50:58,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:50:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:50:58,478 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-01-18 22:50:58,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 92 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 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) [2022-01-18 22:50:58,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:58,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-01-18 22:50:58,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:58,610 INFO L129 PetriNetUnfolder]: 48/251 cut-off events. [2022-01-18 22:50:58,610 INFO L130 PetriNetUnfolder]: For 1770/2529 co-relation queries the response was YES. [2022-01-18 22:50:58,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 251 events. 48/251 cut-off events. For 1770/2529 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1081 event pairs, 4 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 895. Up to 43 conditions per place. [2022-01-18 22:50:58,613 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 19 selfloop transitions, 9 changer transitions 29/116 dead transitions. [2022-01-18 22:50:58,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 116 transitions, 911 flow [2022-01-18 22:50:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 22:50:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 22:50:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 834 transitions. [2022-01-18 22:50:58,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8152492668621701 [2022-01-18 22:50:58,616 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 834 transitions. [2022-01-18 22:50:58,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 834 transitions. [2022-01-18 22:50:58,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:58,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 834 transitions. [2022-01-18 22:50:58,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.81818181818181) internal successors, (834), 11 states have internal predecessors, (834), 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) [2022-01-18 22:50:58,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-01-18 22:50:58,622 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-01-18 22:50:58,622 INFO L186 Difference]: Start difference. First operand has 126 places, 92 transitions, 450 flow. Second operand 11 states and 834 transitions. [2022-01-18 22:50:58,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 116 transitions, 911 flow [2022-01-18 22:50:58,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 735 flow, removed 88 selfloop flow, removed 12 redundant places. [2022-01-18 22:50:58,630 INFO L242 Difference]: Finished difference. Result has 120 places, 84 transitions, 357 flow [2022-01-18 22:50:58,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=357, PETRI_PLACES=120, PETRI_TRANSITIONS=84} [2022-01-18 22:50:58,631 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 35 predicate places. [2022-01-18 22:50:58,631 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 84 transitions, 357 flow [2022-01-18 22:50:58,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 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) [2022-01-18 22:50:58,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:58,632 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:58,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:50:58,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:58,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:58,632 INFO L85 PathProgramCache]: Analyzing trace with hash -55246929, now seen corresponding path program 1 times [2022-01-18 22:50:58,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:58,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610161331] [2022-01-18 22:50:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:58,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:58,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:58,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610161331] [2022-01-18 22:50:58,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610161331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:58,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:58,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:58,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740429013] [2022-01-18 22:50:58,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:58,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:58,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:58,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:58,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:58,704 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-18 22:50:58,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 84 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 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) [2022-01-18 22:50:58,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:58,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-18 22:50:58,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:58,793 INFO L129 PetriNetUnfolder]: 25/172 cut-off events. [2022-01-18 22:50:58,793 INFO L130 PetriNetUnfolder]: For 796/1016 co-relation queries the response was YES. [2022-01-18 22:50:58,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 172 events. 25/172 cut-off events. For 796/1016 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 462 event pairs, 6 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 497. Up to 27 conditions per place. [2022-01-18 22:50:58,794 INFO L132 encePairwiseOnDemand]: 85/93 looper letters, 9 selfloop transitions, 4 changer transitions 21/95 dead transitions. [2022-01-18 22:50:58,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 95 transitions, 501 flow [2022-01-18 22:50:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:50:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:50:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 787 transitions. [2022-01-18 22:50:58,796 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8462365591397849 [2022-01-18 22:50:58,796 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 787 transitions. [2022-01-18 22:50:58,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 787 transitions. [2022-01-18 22:50:58,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:58,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 787 transitions. [2022-01-18 22:50:58,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.7) internal successors, (787), 10 states have internal predecessors, (787), 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) [2022-01-18 22:50:58,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-01-18 22:50:58,799 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-01-18 22:50:58,799 INFO L186 Difference]: Start difference. First operand has 120 places, 84 transitions, 357 flow. Second operand 10 states and 787 transitions. [2022-01-18 22:50:58,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 95 transitions, 501 flow [2022-01-18 22:50:58,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 95 transitions, 428 flow, removed 22 selfloop flow, removed 13 redundant places. [2022-01-18 22:50:58,802 INFO L242 Difference]: Finished difference. Result has 118 places, 74 transitions, 272 flow [2022-01-18 22:50:58,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=118, PETRI_TRANSITIONS=74} [2022-01-18 22:50:58,803 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 33 predicate places. [2022-01-18 22:50:58,803 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 272 flow [2022-01-18 22:50:58,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.71428571428571) internal successors, (544), 7 states have internal predecessors, (544), 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) [2022-01-18 22:50:58,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:58,803 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:58,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:50:58,803 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1882917079, now seen corresponding path program 1 times [2022-01-18 22:50:58,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:58,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708735848] [2022-01-18 22:50:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:58,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:58,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:58,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708735848] [2022-01-18 22:50:58,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708735848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:58,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:58,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:50:58,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148090922] [2022-01-18 22:50:58,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:58,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:50:58,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:58,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:50:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:50:58,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-18 22:50:58,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 74 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2022-01-18 22:50:58,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:58,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-18 22:50:58,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:58,934 INFO L129 PetriNetUnfolder]: 113/367 cut-off events. [2022-01-18 22:50:58,934 INFO L130 PetriNetUnfolder]: For 765/792 co-relation queries the response was YES. [2022-01-18 22:50:58,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 367 events. 113/367 cut-off events. For 765/792 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1722 event pairs, 14 based on Foata normal form. 8/360 useless extension candidates. Maximal degree in co-relation 836. Up to 90 conditions per place. [2022-01-18 22:50:58,936 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 6 changer transitions 19/100 dead transitions. [2022-01-18 22:50:58,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 100 transitions, 404 flow [2022-01-18 22:50:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:50:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:50:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 725 transitions. [2022-01-18 22:50:58,938 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8661887694145759 [2022-01-18 22:50:58,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 725 transitions. [2022-01-18 22:50:58,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 725 transitions. [2022-01-18 22:50:58,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:58,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 725 transitions. [2022-01-18 22:50:58,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 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) [2022-01-18 22:50:58,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-01-18 22:50:58,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2022-01-18 22:50:58,941 INFO L186 Difference]: Start difference. First operand has 118 places, 74 transitions, 272 flow. Second operand 9 states and 725 transitions. [2022-01-18 22:50:58,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 100 transitions, 404 flow [2022-01-18 22:50:58,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 346 flow, removed 12 selfloop flow, removed 18 redundant places. [2022-01-18 22:50:58,943 INFO L242 Difference]: Finished difference. Result has 106 places, 77 transitions, 270 flow [2022-01-18 22:50:58,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=270, PETRI_PLACES=106, PETRI_TRANSITIONS=77} [2022-01-18 22:50:58,944 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 21 predicate places. [2022-01-18 22:50:58,944 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 77 transitions, 270 flow [2022-01-18 22:50:58,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2022-01-18 22:50:58,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:58,944 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:58,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 22:50:58,944 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash -496828178, now seen corresponding path program 1 times [2022-01-18 22:50:58,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:58,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229174318] [2022-01-18 22:50:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:58,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:58,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229174318] [2022-01-18 22:50:58,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229174318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:58,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:58,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:58,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796801086] [2022-01-18 22:50:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:58,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:58,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:59,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-18 22:50:59,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 77 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2022-01-18 22:50:59,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:59,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-18 22:50:59,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:59,083 INFO L129 PetriNetUnfolder]: 60/248 cut-off events. [2022-01-18 22:50:59,083 INFO L130 PetriNetUnfolder]: For 485/509 co-relation queries the response was YES. [2022-01-18 22:50:59,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 248 events. 60/248 cut-off events. For 485/509 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 892 event pairs, 4 based on Foata normal form. 9/253 useless extension candidates. Maximal degree in co-relation 701. Up to 79 conditions per place. [2022-01-18 22:50:59,085 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 14 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2022-01-18 22:50:59,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 535 flow [2022-01-18 22:50:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:50:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:50:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 804 transitions. [2022-01-18 22:50:59,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.864516129032258 [2022-01-18 22:50:59,087 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 804 transitions. [2022-01-18 22:50:59,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 804 transitions. [2022-01-18 22:50:59,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:59,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 804 transitions. [2022-01-18 22:50:59,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.4) internal successors, (804), 10 states have internal predecessors, (804), 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) [2022-01-18 22:50:59,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-01-18 22:50:59,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2022-01-18 22:50:59,090 INFO L186 Difference]: Start difference. First operand has 106 places, 77 transitions, 270 flow. Second operand 10 states and 804 transitions. [2022-01-18 22:50:59,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 535 flow [2022-01-18 22:50:59,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 511 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-01-18 22:50:59,093 INFO L242 Difference]: Finished difference. Result has 112 places, 80 transitions, 338 flow [2022-01-18 22:50:59,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=112, PETRI_TRANSITIONS=80} [2022-01-18 22:50:59,094 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 27 predicate places. [2022-01-18 22:50:59,094 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 80 transitions, 338 flow [2022-01-18 22:50:59,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2022-01-18 22:50:59,094 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:59,094 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:59,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 22:50:59,095 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:59,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1039920585, now seen corresponding path program 1 times [2022-01-18 22:50:59,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:59,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096490764] [2022-01-18 22:50:59,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:59,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:59,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:59,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096490764] [2022-01-18 22:50:59,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096490764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:59,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:59,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:50:59,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918772561] [2022-01-18 22:50:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:59,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:50:59,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:59,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:50:59,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:50:59,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-18 22:50:59,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 80 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2022-01-18 22:50:59,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:59,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-18 22:50:59,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:59,281 INFO L129 PetriNetUnfolder]: 17/127 cut-off events. [2022-01-18 22:50:59,281 INFO L130 PetriNetUnfolder]: For 445/485 co-relation queries the response was YES. [2022-01-18 22:50:59,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 127 events. 17/127 cut-off events. For 445/485 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 237 event pairs, 0 based on Foata normal form. 14/140 useless extension candidates. Maximal degree in co-relation 371. Up to 31 conditions per place. [2022-01-18 22:50:59,282 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 8 selfloop transitions, 12 changer transitions 13/94 dead transitions. [2022-01-18 22:50:59,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 94 transitions, 534 flow [2022-01-18 22:50:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 22:50:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 22:50:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 871 transitions. [2022-01-18 22:50:59,284 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8514173998044966 [2022-01-18 22:50:59,284 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 871 transitions. [2022-01-18 22:50:59,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 871 transitions. [2022-01-18 22:50:59,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:59,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 871 transitions. [2022-01-18 22:50:59,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.18181818181819) internal successors, (871), 11 states have internal predecessors, (871), 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) [2022-01-18 22:50:59,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-01-18 22:50:59,288 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 93.0) internal successors, (1116), 12 states have internal predecessors, (1116), 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) [2022-01-18 22:50:59,288 INFO L186 Difference]: Start difference. First operand has 112 places, 80 transitions, 338 flow. Second operand 11 states and 871 transitions. [2022-01-18 22:50:59,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 94 transitions, 534 flow [2022-01-18 22:50:59,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 94 transitions, 393 flow, removed 53 selfloop flow, removed 17 redundant places. [2022-01-18 22:50:59,290 INFO L242 Difference]: Finished difference. Result has 107 places, 80 transitions, 282 flow [2022-01-18 22:50:59,291 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2022-01-18 22:50:59,292 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2022-01-18 22:50:59,292 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 282 flow [2022-01-18 22:50:59,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2022-01-18 22:50:59,292 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:59,292 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:59,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 22:50:59,293 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:59,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1272626232, now seen corresponding path program 1 times [2022-01-18 22:50:59,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:59,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801946554] [2022-01-18 22:50:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:59,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:59,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:59,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801946554] [2022-01-18 22:50:59,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801946554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:59,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:59,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:59,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731834109] [2022-01-18 22:50:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:59,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:59,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:59,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:59,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:59,367 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2022-01-18 22:50:59,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2022-01-18 22:50:59,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:59,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2022-01-18 22:50:59,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:59,412 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2022-01-18 22:50:59,412 INFO L130 PetriNetUnfolder]: For 83/89 co-relation queries the response was YES. [2022-01-18 22:50:59,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 95 events. 6/95 cut-off events. For 83/89 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 174. Up to 11 conditions per place. [2022-01-18 22:50:59,413 INFO L132 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-01-18 22:50:59,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 79 transitions, 308 flow [2022-01-18 22:50:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 22:50:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-18 22:50:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 546 transitions. [2022-01-18 22:50:59,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2022-01-18 22:50:59,414 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 546 transitions. [2022-01-18 22:50:59,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 546 transitions. [2022-01-18 22:50:59,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:59,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 546 transitions. [2022-01-18 22:50:59,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 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) [2022-01-18 22:50:59,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2022-01-18 22:50:59,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2022-01-18 22:50:59,416 INFO L186 Difference]: Start difference. First operand has 107 places, 80 transitions, 282 flow. Second operand 7 states and 546 transitions. [2022-01-18 22:50:59,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 79 transitions, 308 flow [2022-01-18 22:50:59,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 79 transitions, 226 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-01-18 22:50:59,417 INFO L242 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2022-01-18 22:50:59,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2022-01-18 22:50:59,417 INFO L334 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2022-01-18 22:50:59,418 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2022-01-18 22:50:59,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2022-01-18 22:50:59,420 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 22:50:59,420 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 22:50:59,420 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 22:50:59,420 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 22:50:59,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 22:50:59,422 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:59,424 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:50:59,424 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:50:59,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:50:59 BasicIcfg [2022-01-18 22:50:59,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:50:59,426 INFO L158 Benchmark]: Toolchain (without parser) took 3779.38ms. Allocated memory was 343.9MB in the beginning and 482.3MB in the end (delta: 138.4MB). Free memory was 294.0MB in the beginning and 424.5MB in the end (delta: -130.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.0GB. [2022-01-18 22:50:59,426 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory is still 312.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:50:59,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.55ms. Allocated memory is still 343.9MB. Free memory was 293.8MB in the beginning and 308.4MB in the end (delta: -14.6MB). Peak memory consumption was 14.9MB. Max. memory is 16.0GB. [2022-01-18 22:50:59,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.86ms. Allocated memory is still 343.9MB. Free memory was 308.4MB in the beginning and 306.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:50:59,426 INFO L158 Benchmark]: Boogie Preprocessor took 12.36ms. Allocated memory is still 343.9MB. Free memory was 306.9MB in the beginning and 305.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:50:59,427 INFO L158 Benchmark]: RCFGBuilder took 319.70ms. Allocated memory is still 343.9MB. Free memory was 305.1MB in the beginning and 292.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 22:50:59,427 INFO L158 Benchmark]: TraceAbstraction took 3044.47ms. Allocated memory was 343.9MB in the beginning and 482.3MB in the end (delta: 138.4MB). Free memory was 292.5MB in the beginning and 424.5MB in the end (delta: -132.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.0GB. [2022-01-18 22:50:59,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory is still 312.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 371.55ms. Allocated memory is still 343.9MB. Free memory was 293.8MB in the beginning and 308.4MB in the end (delta: -14.6MB). Peak memory consumption was 14.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.86ms. Allocated memory is still 343.9MB. Free memory was 308.4MB in the beginning and 306.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 12.36ms. Allocated memory is still 343.9MB. Free memory was 306.9MB in the beginning and 305.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 319.70ms. Allocated memory is still 343.9MB. Free memory was 305.1MB in the beginning and 292.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3044.47ms. Allocated memory was 343.9MB in the beginning and 482.3MB in the end (delta: 138.4MB). Free memory was 292.5MB in the beginning and 424.5MB in the end (delta: -132.0MB). Peak memory consumption was 9.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 360 mSDsluCounter, 546 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 539 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 581 IncrementalHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 133 mSDtfsCounter, 581 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=5, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 678 NumberOfCodeBlocks, 678 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 2509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:50:59,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...