/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:01:00,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:01:00,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:01:00,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:01:00,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:01:00,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:01:00,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:01:00,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:01:00,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:01:00,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:01:00,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:01:00,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:01:00,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:01:00,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:01:00,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:01:00,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:01:00,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:01:00,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:01:00,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:01:00,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:01:00,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:01:00,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:01:00,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:01:00,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:01:00,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:01:00,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:01:00,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:01:00,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:01:00,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:01:00,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 19:01:00,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 19:01:00,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 19:01:00,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 19:01:00,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 19:01:00,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 19:01:00,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 19:01:00,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 19:01:00,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 19:01:00,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:01:00,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:01:00,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:01:00,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 19:01:00,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:01:00,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:01:00,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:01:00,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:01:00,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:01:00,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:01:00,841 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:01:00,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:01:00,841 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:01:00,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:01:00,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:01:00,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:01:00,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:01:00,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:01:00,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:01:00,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:01:00,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:01:00,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:01:00,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:01:00,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:01:00,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:01:00,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:01:00,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:01:01,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:01:01,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:01:01,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:01:01,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:01:01,094 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:01:01,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2022-12-12 19:01:02,171 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:01:02,365 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:01:02,365 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2022-12-12 19:01:02,374 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38474512/7f7c2827732a4acb9d75297dc66e633d/FLAG604a22b4c [2022-12-12 19:01:02,385 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38474512/7f7c2827732a4acb9d75297dc66e633d [2022-12-12 19:01:02,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:01:02,388 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:01:02,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:01:02,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:01:02,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:01:02,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598227e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02, skipping insertion in model container [2022-12-12 19:01:02,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:01:02,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:01:02,525 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-12-12 19:01:02,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:01:02,659 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:01:02,668 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-12-12 19:01:02,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:01:02,722 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:01:02,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02 WrapperNode [2022-12-12 19:01:02,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:01:02,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:01:02,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:01:02,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:01:02,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,787 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2022-12-12 19:01:02,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:01:02,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:01:02,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:01:02,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:01:02,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:01:02,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:01:02,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:01:02,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:01:02,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (1/1) ... [2022-12-12 19:01:02,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:01:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:01:02,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 19:01:02,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 19:01:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 19:01:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:01:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 19:01:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:01:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:01:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 19:01:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 19:01:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:01:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:01:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:01:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:01:02,886 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 19:01:03,032 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:01:03,033 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:01:03,193 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:01:03,201 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:01:03,201 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 19:01:03,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:01:03 BoogieIcfgContainer [2022-12-12 19:01:03,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:01:03,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:01:03,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:01:03,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:01:03,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:01:02" (1/3) ... [2022-12-12 19:01:03,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4635197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:01:03, skipping insertion in model container [2022-12-12 19:01:03,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:01:02" (2/3) ... [2022-12-12 19:01:03,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4635197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:01:03, skipping insertion in model container [2022-12-12 19:01:03,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:01:03" (3/3) ... [2022-12-12 19:01:03,209 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2022-12-12 19:01:03,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:01:03,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-12 19:01:03,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:01:03,290 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-12 19:01:03,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 194 flow [2022-12-12 19:01:03,368 INFO L130 PetriNetUnfolder]: 4/92 cut-off events. [2022-12-12 19:01:03,368 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 19:01:03,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 4/92 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 19:01:03,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 194 flow [2022-12-12 19:01:03,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 173 flow [2022-12-12 19:01:03,378 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:01:03,414 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 85 transitions, 173 flow [2022-12-12 19:01:03,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 85 transitions, 173 flow [2022-12-12 19:01:03,434 INFO L130 PetriNetUnfolder]: 4/85 cut-off events. [2022-12-12 19:01:03,434 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:01:03,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 4/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 19:01:03,436 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 85 transitions, 173 flow [2022-12-12 19:01:03,436 INFO L226 LiptonReduction]: Number of co-enabled transitions 1040 [2022-12-12 19:01:06,664 INFO L241 LiptonReduction]: Total number of compositions: 75 [2022-12-12 19:01:06,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:01:06,684 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f1773b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:01:06,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 19:01:06,685 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-12 19:01:06,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:01:06,686 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:01:06,687 INFO L214 CegarLoopForPetriNet]: trace histogram [1] [2022-12-12 19:01:06,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 19:01:06,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:01:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 360, now seen corresponding path program 1 times [2022-12-12 19:01:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:01:06,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452102184] [2022-12-12 19:01:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:01:06,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:01:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:01:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:01:06,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:01:06,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452102184] [2022-12-12 19:01:06,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452102184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:01:06,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:01:06,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-12 19:01:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31615472] [2022-12-12 19:01:06,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:01:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 19:01:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:01:06,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 19:01:06,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 19:01:06,812 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 53 [2022-12-12 19:01:06,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:06,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:01:06,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 53 [2022-12-12 19:01:06,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:01:06,909 INFO L130 PetriNetUnfolder]: 266/626 cut-off events. [2022-12-12 19:01:06,909 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:01:06,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 626 events. 266/626 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3603 event pairs, 266 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 1189. Up to 568 conditions per place. [2022-12-12 19:01:06,917 INFO L137 encePairwiseOnDemand]: 42/53 looper letters, 35 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2022-12-12 19:01:06,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 157 flow [2022-12-12 19:01:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 19:01:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 19:01:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2022-12-12 19:01:06,926 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2022-12-12 19:01:06,928 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2022-12-12 19:01:06,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 157 flow [2022-12-12 19:01:06,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 42 transitions, 157 flow [2022-12-12 19:01:06,931 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 157 flow [2022-12-12 19:01:06,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:06,931 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:01:06,931 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-12 19:01:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:01:06,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 19:01:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:01:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 11644520, now seen corresponding path program 1 times [2022-12-12 19:01:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:01:06,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327442375] [2022-12-12 19:01:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:01:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:01:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:01:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:01:07,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:01:07,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327442375] [2022-12-12 19:01:07,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327442375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:01:07,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:01:07,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 19:01:07,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502952812] [2022-12-12 19:01:07,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:01:07,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:01:07,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:01:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:01:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:01:07,149 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 53 [2022-12-12 19:01:07,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:01:07,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 53 [2022-12-12 19:01:07,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:01:07,251 INFO L130 PetriNetUnfolder]: 325/723 cut-off events. [2022-12-12 19:01:07,252 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-12 19:01:07,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 723 events. 325/723 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4154 event pairs, 164 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 2050. Up to 627 conditions per place. [2022-12-12 19:01:07,258 INFO L137 encePairwiseOnDemand]: 43/53 looper letters, 50 selfloop transitions, 5 changer transitions 9/67 dead transitions. [2022-12-12 19:01:07,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 379 flow [2022-12-12 19:01:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:01:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:01:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2022-12-12 19:01:07,265 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2022-12-12 19:01:07,265 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-12-12 19:01:07,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 67 transitions, 379 flow [2022-12-12 19:01:07,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 58 transitions, 329 flow [2022-12-12 19:01:07,270 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 58 transitions, 329 flow [2022-12-12 19:01:07,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,270 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:01:07,271 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 19:01:07,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 19:01:07,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 19:01:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:01:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1695776164, now seen corresponding path program 1 times [2022-12-12 19:01:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:01:07,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881473159] [2022-12-12 19:01:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:01:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:01:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:01:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:01:07,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:01:07,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881473159] [2022-12-12 19:01:07,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881473159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:01:07,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:01:07,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:01:07,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825543392] [2022-12-12 19:01:07,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:01:07,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:01:07,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:01:07,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:01:07,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:01:07,406 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 53 [2022-12-12 19:01:07,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 58 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:01:07,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 53 [2022-12-12 19:01:07,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:01:07,625 INFO L130 PetriNetUnfolder]: 369/825 cut-off events. [2022-12-12 19:01:07,625 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-12-12 19:01:07,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 825 events. 369/825 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5103 event pairs, 106 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 3129. Up to 729 conditions per place. [2022-12-12 19:01:07,628 INFO L137 encePairwiseOnDemand]: 40/53 looper letters, 53 selfloop transitions, 14 changer transitions 51/120 dead transitions. [2022-12-12 19:01:07,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 120 transitions, 923 flow [2022-12-12 19:01:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:01:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:01:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2022-12-12 19:01:07,633 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3881401617250674 [2022-12-12 19:01:07,634 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-12 19:01:07,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 120 transitions, 923 flow [2022-12-12 19:01:07,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 69 transitions, 527 flow [2022-12-12 19:01:07,636 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 69 transitions, 527 flow [2022-12-12 19:01:07,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,637 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:01:07,637 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 19:01:07,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 19:01:07,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 19:01:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:01:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1694536357, now seen corresponding path program 1 times [2022-12-12 19:01:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:01:07,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882722742] [2022-12-12 19:01:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:01:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:01:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:01:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:01:07,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:01:07,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882722742] [2022-12-12 19:01:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882722742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:01:07,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:01:07,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 19:01:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025966634] [2022-12-12 19:01:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:01:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:01:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:01:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:01:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:01:07,707 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 53 [2022-12-12 19:01:07,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 69 transitions, 527 flow. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:01:07,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 53 [2022-12-12 19:01:07,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:01:07,789 INFO L130 PetriNetUnfolder]: 258/588 cut-off events. [2022-12-12 19:01:07,789 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-12 19:01:07,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 588 events. 258/588 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3455 event pairs, 54 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 2788. Up to 551 conditions per place. [2022-12-12 19:01:07,791 INFO L137 encePairwiseOnDemand]: 43/53 looper letters, 60 selfloop transitions, 11 changer transitions 17/89 dead transitions. [2022-12-12 19:01:07,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 89 transitions, 853 flow [2022-12-12 19:01:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:01:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:01:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-12-12 19:01:07,792 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4088050314465409 [2022-12-12 19:01:07,793 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-12-12 19:01:07,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 89 transitions, 853 flow [2022-12-12 19:01:07,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 72 transitions, 695 flow [2022-12-12 19:01:07,796 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 72 transitions, 695 flow [2022-12-12 19:01:07,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,796 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:01:07,796 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:01:07,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 19:01:07,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 19:01:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:01:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash -990412483, now seen corresponding path program 1 times [2022-12-12 19:01:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:01:07,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816018968] [2022-12-12 19:01:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:01:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:01:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:01:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:01:07,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:01:07,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816018968] [2022-12-12 19:01:07,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816018968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:01:07,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:01:07,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:01:07,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305718175] [2022-12-12 19:01:07,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:01:07,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:01:07,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:01:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:01:07,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:01:07,864 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 53 [2022-12-12 19:01:07,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 72 transitions, 695 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:01:07,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 53 [2022-12-12 19:01:07,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:01:07,893 INFO L130 PetriNetUnfolder]: 0/72 cut-off events. [2022-12-12 19:01:07,894 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-12 19:01:07,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 72 events. 0/72 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 286 event pairs, 0 based on Foata normal form. 19/70 useless extension candidates. Maximal degree in co-relation 0. Up to 67 conditions per place. [2022-12-12 19:01:07,894 INFO L137 encePairwiseOnDemand]: 46/53 looper letters, 14 selfloop transitions, 9 changer transitions 16/40 dead transitions. [2022-12-12 19:01:07,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 451 flow [2022-12-12 19:01:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:01:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:01:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2022-12-12 19:01:07,898 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2830188679245283 [2022-12-12 19:01:07,901 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2022-12-12 19:01:07,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 40 transitions, 451 flow [2022-12-12 19:01:07,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 24 transitions, 279 flow [2022-12-12 19:01:07,902 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 279 flow [2022-12-12 19:01:07,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:07,903 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:01:07,903 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:01:07,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 19:01:07,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 19:01:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:01:07,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1011842081, now seen corresponding path program 1 times [2022-12-12 19:01:07,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:01:07,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898948424] [2022-12-12 19:01:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:01:07,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:01:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:01:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:01:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:01:08,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898948424] [2022-12-12 19:01:08,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898948424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:01:08,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:01:08,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:01:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425257818] [2022-12-12 19:01:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:01:08,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 19:01:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:01:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 19:01:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 19:01:08,053 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 53 [2022-12-12 19:01:08,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:08,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:01:08,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 53 [2022-12-12 19:01:08,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:01:08,110 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-12-12 19:01:08,110 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-12 19:01:08,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 32 events. 0/32 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2022-12-12 19:01:08,111 INFO L137 encePairwiseOnDemand]: 44/53 looper letters, 11 selfloop transitions, 2 changer transitions 9/23 dead transitions. [2022-12-12 19:01:08,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 23 transitions, 311 flow [2022-12-12 19:01:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:01:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:01:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 43 transitions. [2022-12-12 19:01:08,111 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.11590296495956873 [2022-12-12 19:01:08,113 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -11 predicate places. [2022-12-12 19:01:08,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 23 transitions, 311 flow [2022-12-12 19:01:08,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 14 transitions, 189 flow [2022-12-12 19:01:08,114 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions, 189 flow [2022-12-12 19:01:08,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:08,114 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:01:08,114 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:01:08,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 19:01:08,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 19:01:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:01:08,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1210960006, now seen corresponding path program 1 times [2022-12-12 19:01:08,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:01:08,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654252935] [2022-12-12 19:01:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:01:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:01:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:01:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:01:08,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:01:08,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654252935] [2022-12-12 19:01:08,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654252935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:01:08,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:01:08,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:01:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193059076] [2022-12-12 19:01:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:01:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 19:01:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:01:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 19:01:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 19:01:08,204 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 53 [2022-12-12 19:01:08,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 14 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:08,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:01:08,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 53 [2022-12-12 19:01:08,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:01:08,242 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2022-12-12 19:01:08,263 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-12 19:01:08,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 19 events. 0/19 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 3/21 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2022-12-12 19:01:08,263 INFO L137 encePairwiseOnDemand]: 46/53 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2022-12-12 19:01:08,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 13 transitions, 199 flow [2022-12-12 19:01:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:01:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:01:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2022-12-12 19:01:08,264 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.09164420485175202 [2022-12-12 19:01:08,265 INFO L295 CegarLoopForPetriNet]: 51 programPoint places, -17 predicate places. [2022-12-12 19:01:08,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 13 transitions, 199 flow [2022-12-12 19:01:08,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 19:01:08,265 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 19:01:08,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:01:08,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-12 19:01:08,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-12 19:01:08,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-12 19:01:08,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-12-12 19:01:08,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-12-12 19:01:08,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-12-12 19:01:08,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-12 19:01:08,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 19:01:08,268 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:01:08,272 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 19:01:08,272 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 19:01:08,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 07:01:08 BasicIcfg [2022-12-12 19:01:08,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 19:01:08,283 INFO L158 Benchmark]: Toolchain (without parser) took 5894.87ms. Allocated memory was 188.7MB in the beginning and 326.1MB in the end (delta: 137.4MB). Free memory was 164.2MB in the beginning and 298.9MB in the end (delta: -134.7MB). Peak memory consumption was 2.6MB. Max. memory is 8.0GB. [2022-12-12 19:01:08,283 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 165.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:01:08,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.53ms. Allocated memory is still 188.7MB. Free memory was 164.2MB in the beginning and 144.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 19:01:08,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.71ms. Allocated memory is still 188.7MB. Free memory was 144.7MB in the beginning and 142.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 19:01:08,283 INFO L158 Benchmark]: Boogie Preprocessor took 28.66ms. Allocated memory is still 188.7MB. Free memory was 142.7MB in the beginning and 141.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 19:01:08,284 INFO L158 Benchmark]: RCFGBuilder took 385.59ms. Allocated memory is still 188.7MB. Free memory was 141.1MB in the beginning and 127.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 19:01:08,284 INFO L158 Benchmark]: TraceAbstraction took 5077.50ms. Allocated memory was 188.7MB in the beginning and 326.1MB in the end (delta: 137.4MB). Free memory was 125.9MB in the beginning and 298.9MB in the end (delta: -173.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:01:08,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 165.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 335.53ms. Allocated memory is still 188.7MB. Free memory was 164.2MB in the beginning and 144.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.71ms. Allocated memory is still 188.7MB. Free memory was 144.7MB in the beginning and 142.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.66ms. Allocated memory is still 188.7MB. Free memory was 142.7MB in the beginning and 141.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 385.59ms. Allocated memory is still 188.7MB. Free memory was 141.1MB in the beginning and 127.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5077.50ms. Allocated memory was 188.7MB in the beginning and 326.1MB in the end (delta: 137.4MB). Free memory was 125.9MB in the beginning and 298.9MB in the end (delta: -173.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 85 PlacesBefore, 51 PlacesAfterwards, 85 TransitionsBefore, 53 TransitionsAfterwards, 1040 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 27 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3164, independent: 2942, independent conditional: 2942, independent unconditional: 0, dependent: 222, dependent conditional: 222, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3164, independent: 2942, independent conditional: 0, independent unconditional: 2942, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3164, independent: 2942, independent conditional: 0, independent unconditional: 2942, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3164, independent: 2942, independent conditional: 0, independent unconditional: 2942, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1477, independent: 1433, independent conditional: 0, independent unconditional: 1433, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1477, independent: 1279, independent conditional: 0, independent unconditional: 1279, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 198, independent: 154, independent conditional: 0, independent unconditional: 154, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 211, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3164, independent: 1509, independent conditional: 0, independent unconditional: 1509, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 1477, unknown conditional: 0, unknown unconditional: 1477] , Statistics on independence cache: Total cache size (in pairs): 3758, Positive cache size: 3714, Positive conditional cache size: 0, Positive unconditional cache size: 3714, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 116 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 143 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 579 IncrementalHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 13 mSDtfsCounter, 579 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=695occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1097 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 19:01:08,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...