./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:59:52,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:59:52,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:59:52,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:59:52,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:59:52,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:59:52,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:59:52,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:59:52,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:59:52,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:59:52,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:59:52,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:59:52,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:59:52,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:59:52,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:59:52,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:59:52,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:59:52,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:59:52,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:59:52,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:59:52,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:59:52,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:59:52,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:59:52,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:59:52,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:59:52,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:59:52,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:59:52,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:59:52,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:59:52,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:59:52,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:59:52,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:59:52,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:59:52,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:59:52,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:59:52,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:59:52,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:59:52,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:59:52,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:59:52,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:59:52,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:59:52,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:59:52,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:59:52,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:59:52,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:59:52,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:59:52,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:59:52,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:59:52,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:59:52,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:59:52,615 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:59:52,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:59:52,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:59:52,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:59:52,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:59:52,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:59:52,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:59:52,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:59:52,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:59:52,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:59:52,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:59:52,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:59:52,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:59:52,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:59:52,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:59:52,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:59:52,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:59:52,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:59:52,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:59:52,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:59:52,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:59:52,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:59:52,620 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:59:52,620 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:59:52,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:59:52,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:59:52,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2021-12-16 02:59:52,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:59:52,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:59:52,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:59:52,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:59:52,853 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:59:52,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2021-12-16 02:59:52,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a4d9c8a/71287d470d3f492f8742ff646beb30cf/FLAG8412d8bc9 [2021-12-16 02:59:53,236 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:59:53,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2021-12-16 02:59:53,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a4d9c8a/71287d470d3f492f8742ff646beb30cf/FLAG8412d8bc9 [2021-12-16 02:59:53,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a4d9c8a/71287d470d3f492f8742ff646beb30cf [2021-12-16 02:59:53,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:59:53,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:59:53,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:59:53,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:59:53,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:59:53,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:53,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710c8ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53, skipping insertion in model container [2021-12-16 02:59:53,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:53,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:59:53,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:59:53,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2021-12-16 02:59:53,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:59:53,894 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:59:53,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2021-12-16 02:59:53,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:59:53,947 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:59:53,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53 WrapperNode [2021-12-16 02:59:53,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:59:53,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:59:53,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:59:53,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:59:53,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:53,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:53,984 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2021-12-16 02:59:53,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:59:53,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:59:53,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:59:53,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:59:53,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:53,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:54,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:54,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:54,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:54,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:54,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:54,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:59:54,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:59:54,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:59:54,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:59:54,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (1/1) ... [2021-12-16 02:59:54,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:59:54,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:59:54,050 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) [2021-12-16 02:59:54,057 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 [2021-12-16 02:59:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:59:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 02:59:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 02:59:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 02:59:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 02:59:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-16 02:59:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-16 02:59:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-16 02:59:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-16 02:59:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:59:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:59:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:59:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:59:54,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:59:54,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 02:59:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:59:54,082 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 02:59:54,140 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:59:54,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:59:54,308 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:59:54,314 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:59:54,315 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-16 02:59:54,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:59:54 BoogieIcfgContainer [2021-12-16 02:59:54,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:59:54,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:59:54,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:59:54,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:59:54,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:59:53" (1/3) ... [2021-12-16 02:59:54,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796dec0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:59:54, skipping insertion in model container [2021-12-16 02:59:54,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:59:53" (2/3) ... [2021-12-16 02:59:54,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796dec0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:59:54, skipping insertion in model container [2021-12-16 02:59:54,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:59:54" (3/3) ... [2021-12-16 02:59:54,327 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2021-12-16 02:59:54,330 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:59:54,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:59:54,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 02:59:54,344 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:59:54,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,379 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,394 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,394 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,395 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,397 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,400 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,401 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,416 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,416 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:59:54,420 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-12-16 02:59:54,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:59:54,473 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=true, 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 [2021-12-16 02:59:54,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-16 02:59:54,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2021-12-16 02:59:54,569 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2021-12-16 02:59:54,570 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-16 02:59:54,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2021-12-16 02:59:54,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2021-12-16 02:59:54,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2021-12-16 02:59:54,637 INFO L129 PetriNetUnfolder]: 10/131 cut-off events. [2021-12-16 02:59:54,639 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-16 02:59:54,639 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:59:54,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:59:54,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:59:54,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:59:54,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1414166451, now seen corresponding path program 1 times [2021-12-16 02:59:54,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:59:54,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008543662] [2021-12-16 02:59:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:59:54,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:59:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:59:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:59:54,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:59:54,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008543662] [2021-12-16 02:59:54,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008543662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:59:54,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:59:54,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:59:54,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647419033] [2021-12-16 02:59:54,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:59:54,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:59:54,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:59:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:59:54,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:59:54,908 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2021-12-16 02:59:54,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:54,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:59:54,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2021-12-16 02:59:54,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:59:54,958 INFO L129 PetriNetUnfolder]: 4/126 cut-off events. [2021-12-16 02:59:54,959 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-12-16 02:59:54,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2021-12-16 02:59:54,962 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2021-12-16 02:59:54,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2021-12-16 02:59:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:59:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-16 02:59:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2021-12-16 02:59:54,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2021-12-16 02:59:54,977 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2021-12-16 02:59:54,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2021-12-16 02:59:54,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:59:54,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2021-12-16 02:59:54,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:54,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:54,990 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:54,993 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2021-12-16 02:59:54,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2021-12-16 02:59:54,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-16 02:59:55,000 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2021-12-16 02:59:55,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2021-12-16 02:59:55,009 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2021-12-16 02:59:55,010 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2021-12-16 02:59:55,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:55,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:59:55,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:59:55,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:59:55,016 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:59:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:59:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2021-12-16 02:59:55,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:59:55,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973174849] [2021-12-16 02:59:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:59:55,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:59:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:59:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:59:55,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:59:55,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973174849] [2021-12-16 02:59:55,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973174849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:59:55,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:59:55,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:59:55,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656062750] [2021-12-16 02:59:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:59:55,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:59:55,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:59:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:59:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:59:55,356 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2021-12-16 02:59:55,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:55,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:59:55,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2021-12-16 02:59:55,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:59:58,006 INFO L129 PetriNetUnfolder]: 24847/33594 cut-off events. [2021-12-16 02:59:58,007 INFO L130 PetriNetUnfolder]: For 860/935 co-relation queries the response was YES. [2021-12-16 02:59:58,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 33594 events. 24847/33594 cut-off events. For 860/935 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 189881 event pairs, 11708 based on Foata normal form. 1/29807 useless extension candidates. Maximal degree in co-relation 67679. Up to 32788 conditions per place. [2021-12-16 02:59:58,460 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2021-12-16 02:59:58,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2021-12-16 02:59:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:59:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 02:59:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2021-12-16 02:59:58,464 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2021-12-16 02:59:58,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2021-12-16 02:59:58,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2021-12-16 02:59:58,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:59:58,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2021-12-16 02:59:58,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:58,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:58,473 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:58,473 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2021-12-16 02:59:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2021-12-16 02:59:58,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 02:59:58,479 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2021-12-16 02:59:58,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2021-12-16 02:59:58,480 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2021-12-16 02:59:58,480 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2021-12-16 02:59:58,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:58,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:59:58,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:59:58,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:59:58,482 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 02:59:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:59:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1435785726, now seen corresponding path program 1 times [2021-12-16 02:59:58,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:59:58,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202633265] [2021-12-16 02:59:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:59:58,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:59:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:59:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:59:58,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:59:58,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202633265] [2021-12-16 02:59:58,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202633265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:59:58,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:59:58,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:59:58,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752997563] [2021-12-16 02:59:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:59:58,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:59:58,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:59:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:59:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:59:58,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 02:59:58,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:59:58,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:59:58,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 02:59:58,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:01,111 INFO L129 PetriNetUnfolder]: 24821/33501 cut-off events. [2021-12-16 03:00:01,112 INFO L130 PetriNetUnfolder]: For 3786/3861 co-relation queries the response was YES. [2021-12-16 03:00:01,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71364 conditions, 33501 events. 24821/33501 cut-off events. For 3786/3861 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 189180 event pairs, 11557 based on Foata normal form. 0/29743 useless extension candidates. Maximal degree in co-relation 71357. Up to 32790 conditions per place. [2021-12-16 03:00:01,342 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 81 selfloop transitions, 11 changer transitions 1/155 dead transitions. [2021-12-16 03:00:01,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 155 transitions, 554 flow [2021-12-16 03:00:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:00:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:00:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2021-12-16 03:00:01,345 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6297539149888143 [2021-12-16 03:00:01,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2021-12-16 03:00:01,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2021-12-16 03:00:01,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:01,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2021-12-16 03:00:01,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:01,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:01,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:01,349 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 6 states and 563 transitions. [2021-12-16 03:00:01,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 155 transitions, 554 flow [2021-12-16 03:00:01,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 155 transitions, 539 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-12-16 03:00:01,353 INFO L242 Difference]: Finished difference. Result has 135 places, 132 transitions, 337 flow [2021-12-16 03:00:01,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2021-12-16 03:00:01,354 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2021-12-16 03:00:01,354 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 337 flow [2021-12-16 03:00:01,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:01,355 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:01,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:01,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:00:01,355 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 03:00:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash -678323914, now seen corresponding path program 2 times [2021-12-16 03:00:01,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:01,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077970544] [2021-12-16 03:00:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:01,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:01,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:01,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077970544] [2021-12-16 03:00:01,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077970544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:01,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:01,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:00:01,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556431704] [2021-12-16 03:00:01,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:01,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:00:01,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:01,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:00:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:00:01,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 03:00:01,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:01,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:01,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 03:00:01,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:03,829 INFO L129 PetriNetUnfolder]: 24709/33724 cut-off events. [2021-12-16 03:00:03,829 INFO L130 PetriNetUnfolder]: For 7516/7601 co-relation queries the response was YES. [2021-12-16 03:00:03,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75024 conditions, 33724 events. 24709/33724 cut-off events. For 7516/7601 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 194599 event pairs, 12405 based on Foata normal form. 37/31819 useless extension candidates. Maximal degree in co-relation 75017. Up to 32735 conditions per place. [2021-12-16 03:00:04,096 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 82 selfloop transitions, 13 changer transitions 1/158 dead transitions. [2021-12-16 03:00:04,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 158 transitions, 613 flow [2021-12-16 03:00:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:00:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:00:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2021-12-16 03:00:04,101 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2021-12-16 03:00:04,101 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2021-12-16 03:00:04,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2021-12-16 03:00:04,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:04,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2021-12-16 03:00:04,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:04,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:04,107 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:04,108 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 337 flow. Second operand 6 states and 562 transitions. [2021-12-16 03:00:04,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 158 transitions, 613 flow [2021-12-16 03:00:04,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 158 transitions, 591 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 03:00:04,117 INFO L242 Difference]: Finished difference. Result has 138 places, 136 transitions, 384 flow [2021-12-16 03:00:04,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2021-12-16 03:00:04,118 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2021-12-16 03:00:04,118 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 384 flow [2021-12-16 03:00:04,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:04,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:04,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:04,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:00:04,120 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 03:00:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash 34940876, now seen corresponding path program 3 times [2021-12-16 03:00:04,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:04,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733657419] [2021-12-16 03:00:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:04,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:04,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:04,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733657419] [2021-12-16 03:00:04,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733657419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:04,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:04,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:00:04,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341593289] [2021-12-16 03:00:04,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:04,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:00:04,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:00:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:00:04,376 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 03:00:04,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:04,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:04,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 03:00:04,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:06,758 INFO L129 PetriNetUnfolder]: 27400/37091 cut-off events. [2021-12-16 03:00:06,758 INFO L130 PetriNetUnfolder]: For 14775/14847 co-relation queries the response was YES. [2021-12-16 03:00:06,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85484 conditions, 37091 events. 27400/37091 cut-off events. For 14775/14847 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 215849 event pairs, 8744 based on Foata normal form. 902/35852 useless extension candidates. Maximal degree in co-relation 85475. Up to 29078 conditions per place. [2021-12-16 03:00:07,138 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 111 selfloop transitions, 15 changer transitions 1/189 dead transitions. [2021-12-16 03:00:07,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 189 transitions, 783 flow [2021-12-16 03:00:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:00:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:00:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2021-12-16 03:00:07,141 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2021-12-16 03:00:07,141 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2021-12-16 03:00:07,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2021-12-16 03:00:07,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:07,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2021-12-16 03:00:07,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:07,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:07,145 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:07,145 INFO L186 Difference]: Start difference. First operand has 138 places, 136 transitions, 384 flow. Second operand 7 states and 670 transitions. [2021-12-16 03:00:07,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 189 transitions, 783 flow [2021-12-16 03:00:07,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 189 transitions, 760 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-12-16 03:00:07,152 INFO L242 Difference]: Finished difference. Result has 143 places, 137 transitions, 418 flow [2021-12-16 03:00:07,153 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2021-12-16 03:00:07,153 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 8 predicate places. [2021-12-16 03:00:07,154 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 418 flow [2021-12-16 03:00:07,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:07,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:07,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:07,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:00:07,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 03:00:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:07,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1082751602, now seen corresponding path program 1 times [2021-12-16 03:00:07,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:07,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789990147] [2021-12-16 03:00:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:07,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:07,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:07,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789990147] [2021-12-16 03:00:07,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789990147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:07,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:07,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:00:07,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506899545] [2021-12-16 03:00:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:07,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:00:07,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:00:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:00:07,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 03:00:07,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:07,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:07,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 03:00:07,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:09,990 INFO L129 PetriNetUnfolder]: 27379/39351 cut-off events. [2021-12-16 03:00:09,991 INFO L130 PetriNetUnfolder]: For 21988/22051 co-relation queries the response was YES. [2021-12-16 03:00:10,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91342 conditions, 39351 events. 27379/39351 cut-off events. For 21988/22051 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 259709 event pairs, 14648 based on Foata normal form. 0/37227 useless extension candidates. Maximal degree in co-relation 91332. Up to 36326 conditions per place. [2021-12-16 03:00:10,279 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 89 selfloop transitions, 21 changer transitions 1/173 dead transitions. [2021-12-16 03:00:10,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 173 transitions, 838 flow [2021-12-16 03:00:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:00:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:00:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2021-12-16 03:00:10,282 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6308724832214765 [2021-12-16 03:00:10,282 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2021-12-16 03:00:10,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2021-12-16 03:00:10,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:10,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2021-12-16 03:00:10,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:10,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:10,286 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:10,286 INFO L186 Difference]: Start difference. First operand has 143 places, 137 transitions, 418 flow. Second operand 6 states and 564 transitions. [2021-12-16 03:00:10,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 173 transitions, 838 flow [2021-12-16 03:00:10,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 173 transitions, 809 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 03:00:10,297 INFO L242 Difference]: Finished difference. Result has 146 places, 147 transitions, 548 flow [2021-12-16 03:00:10,298 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2021-12-16 03:00:10,298 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 11 predicate places. [2021-12-16 03:00:10,299 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 548 flow [2021-12-16 03:00:10,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:10,299 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:10,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:10,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:00:10,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 03:00:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash 267422604, now seen corresponding path program 2 times [2021-12-16 03:00:10,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:10,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683129701] [2021-12-16 03:00:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:10,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:10,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:10,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683129701] [2021-12-16 03:00:10,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683129701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:10,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:10,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:00:10,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390463711] [2021-12-16 03:00:10,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:10,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:00:10,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:10,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:00:10,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:00:10,502 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 03:00:10,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:10,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:10,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 03:00:10,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:13,441 INFO L129 PetriNetUnfolder]: 27326/39130 cut-off events. [2021-12-16 03:00:13,441 INFO L130 PetriNetUnfolder]: For 24540/24603 co-relation queries the response was YES. [2021-12-16 03:00:13,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94991 conditions, 39130 events. 27326/39130 cut-off events. For 24540/24603 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 253803 event pairs, 17526 based on Foata normal form. 20/38872 useless extension candidates. Maximal degree in co-relation 94978. Up to 36297 conditions per place. [2021-12-16 03:00:13,766 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 90 selfloop transitions, 17 changer transitions 2/171 dead transitions. [2021-12-16 03:00:13,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 171 transitions, 844 flow [2021-12-16 03:00:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:00:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:00:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2021-12-16 03:00:13,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2021-12-16 03:00:13,769 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2021-12-16 03:00:13,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2021-12-16 03:00:13,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:13,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2021-12-16 03:00:13,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:13,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:13,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:13,773 INFO L186 Difference]: Start difference. First operand has 146 places, 147 transitions, 548 flow. Second operand 6 states and 562 transitions. [2021-12-16 03:00:13,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 171 transitions, 844 flow [2021-12-16 03:00:13,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 171 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 03:00:13,790 INFO L242 Difference]: Finished difference. Result has 150 places, 145 transitions, 550 flow [2021-12-16 03:00:13,790 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=150, PETRI_TRANSITIONS=145} [2021-12-16 03:00:13,791 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 15 predicate places. [2021-12-16 03:00:13,791 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 145 transitions, 550 flow [2021-12-16 03:00:13,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:13,792 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:13,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:13,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:00:13,793 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 03:00:13,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash 620717378, now seen corresponding path program 1 times [2021-12-16 03:00:13,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:13,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208092274] [2021-12-16 03:00:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:13,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:13,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:13,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208092274] [2021-12-16 03:00:13,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208092274] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:00:13,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813167998] [2021-12-16 03:00:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:13,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:00:13,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:00:14,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:00:14,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:00:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:14,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:00:14,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:00:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:17,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:00:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:17,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813167998] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:00:17,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:00:17,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2021-12-16 03:00:17,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311442420] [2021-12-16 03:00:17,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:00:17,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 03:00:17,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 03:00:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:00:17,447 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 03:00:17,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 145 transitions, 550 flow. Second operand has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:17,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:17,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 03:00:17,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:22,006 INFO L129 PetriNetUnfolder]: 38104/55867 cut-off events. [2021-12-16 03:00:22,006 INFO L130 PetriNetUnfolder]: For 40938/40979 co-relation queries the response was YES. [2021-12-16 03:00:22,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140707 conditions, 55867 events. 38104/55867 cut-off events. For 40938/40979 co-relation queries the response was YES. Maximal size of possible extension queue 1883. Compared 389838 event pairs, 2933 based on Foata normal form. 1114/56792 useless extension candidates. Maximal degree in co-relation 140692. Up to 30380 conditions per place. [2021-12-16 03:00:22,510 INFO L132 encePairwiseOnDemand]: 134/149 looper letters, 250 selfloop transitions, 32 changer transitions 2/346 dead transitions. [2021-12-16 03:00:22,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 346 transitions, 1826 flow [2021-12-16 03:00:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 03:00:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-16 03:00:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1357 transitions. [2021-12-16 03:00:22,523 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6505273250239694 [2021-12-16 03:00:22,523 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1357 transitions. [2021-12-16 03:00:22,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1357 transitions. [2021-12-16 03:00:22,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:22,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1357 transitions. [2021-12-16 03:00:22,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 96.92857142857143) internal successors, (1357), 14 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:22,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:22,541 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:22,541 INFO L186 Difference]: Start difference. First operand has 150 places, 145 transitions, 550 flow. Second operand 14 states and 1357 transitions. [2021-12-16 03:00:22,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 346 transitions, 1826 flow [2021-12-16 03:00:22,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 346 transitions, 1785 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-12-16 03:00:22,609 INFO L242 Difference]: Finished difference. Result has 167 places, 157 transitions, 700 flow [2021-12-16 03:00:22,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=700, PETRI_PLACES=167, PETRI_TRANSITIONS=157} [2021-12-16 03:00:22,611 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 32 predicate places. [2021-12-16 03:00:22,612 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 157 transitions, 700 flow [2021-12-16 03:00:22,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:22,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:22,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:22,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 03:00:22,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:00:22,831 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 03:00:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash 440214246, now seen corresponding path program 3 times [2021-12-16 03:00:22,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:22,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10378515] [2021-12-16 03:00:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:22,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:23,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:23,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10378515] [2021-12-16 03:00:23,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10378515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:23,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:23,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:00:23,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018916002] [2021-12-16 03:00:23,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:23,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:00:23,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:23,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:00:23,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:00:23,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 03:00:23,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 157 transitions, 700 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:23,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:23,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 03:00:23,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:00:28,324 INFO L129 PetriNetUnfolder]: 41124/59664 cut-off events. [2021-12-16 03:00:28,325 INFO L130 PetriNetUnfolder]: For 79828/79903 co-relation queries the response was YES. [2021-12-16 03:00:28,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169767 conditions, 59664 events. 41124/59664 cut-off events. For 79828/79903 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 410802 event pairs, 23951 based on Foata normal form. 909/60284 useless extension candidates. Maximal degree in co-relation 169746. Up to 44500 conditions per place. [2021-12-16 03:00:28,884 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 133 selfloop transitions, 21 changer transitions 2/218 dead transitions. [2021-12-16 03:00:28,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 218 transitions, 1289 flow [2021-12-16 03:00:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:00:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:00:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2021-12-16 03:00:28,892 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2021-12-16 03:00:28,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2021-12-16 03:00:28,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2021-12-16 03:00:28,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:00:28,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2021-12-16 03:00:28,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:28,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:28,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:28,896 INFO L186 Difference]: Start difference. First operand has 167 places, 157 transitions, 700 flow. Second operand 7 states and 670 transitions. [2021-12-16 03:00:28,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 218 transitions, 1289 flow [2021-12-16 03:00:29,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 218 transitions, 1258 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-12-16 03:00:29,419 INFO L242 Difference]: Finished difference. Result has 170 places, 158 transitions, 744 flow [2021-12-16 03:00:29,420 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=744, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2021-12-16 03:00:29,420 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 35 predicate places. [2021-12-16 03:00:29,420 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 744 flow [2021-12-16 03:00:29,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:29,421 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:00:29,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:00:29,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:00:29,421 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-12-16 03:00:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:00:29,422 INFO L85 PathProgramCache]: Analyzing trace with hash -387427532, now seen corresponding path program 1 times [2021-12-16 03:00:29,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:00:29,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340666020] [2021-12-16 03:00:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:00:29,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:00:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:00:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:00:29,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:00:29,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340666020] [2021-12-16 03:00:29,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340666020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:00:29,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:00:29,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:00:29,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732442946] [2021-12-16 03:00:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:00:29,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:00:29,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:00:29,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:00:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:00:29,547 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2021-12-16 03:00:29,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 744 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:00:29,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:00:29,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2021-12-16 03:00:29,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand