./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/array-eq-trans.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/array-eq-trans.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:45:55,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:45:55,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:45:55,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:45:55,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:45:55,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:45:55,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:45:55,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:45:55,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:45:55,823 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:45:55,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:45:55,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:45:55,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:45:55,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:45:55,841 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:45:55,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:45:55,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:45:55,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:45:55,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:45:55,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:45:55,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:45:55,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:45:55,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:45:55,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:45:55,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:45:55,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:45:55,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:45:55,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:45:55,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:45:55,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:45:55,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:45:55,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:45:55,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:55,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:45:55,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:45:55,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:45:55,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:45:55,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:45:55,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:45:55,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:45:55,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:45:55,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:45:55,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:45:55,847 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:45:56,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:45:56,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:45:56,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:45:56,190 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:45:56,190 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:45:56,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/array-eq-trans.wvr.yml/witness.yml [2024-01-31 16:45:56,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:45:56,364 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:45:56,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-01-31 16:45:57,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:45:57,682 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:45:57,683 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-01-31 16:45:57,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69cb30e1/d42f680b974d415986fa8566f08afa19/FLAGfeb3e1840 [2024-01-31 16:45:57,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69cb30e1/d42f680b974d415986fa8566f08afa19 [2024-01-31 16:45:57,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:45:57,701 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:45:57,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:57,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:45:57,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:45:57,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:56" (1/2) ... [2024-01-31 16:45:57,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c98a11 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:57, skipping insertion in model container [2024-01-31 16:45:57,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:56" (1/2) ... [2024-01-31 16:45:57,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c783ae0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:45:57, skipping insertion in model container [2024-01-31 16:45:57,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:57" (2/2) ... [2024-01-31 16:45:57,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c98a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57, skipping insertion in model container [2024-01-31 16:45:57,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:45:57" (2/2) ... [2024-01-31 16:45:57,709 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:45:57,751 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:45:57,770 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:45:57,922 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c[2776,2789] [2024-01-31 16:45:57,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:57,959 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:45:57,978 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c[2776,2789] [2024-01-31 16:45:57,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:45:57,996 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:45:57,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57 WrapperNode [2024-01-31 16:45:57,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:45:57,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:57,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:45:57,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:45:58,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,029 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 212 [2024-01-31 16:45:58,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:45:58,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:45:58,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:45:58,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:45:58,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,055 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 15, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2024-01-31 16:45:58,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:45:58,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:45:58,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:45:58,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:45:58,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (1/1) ... [2024-01-31 16:45:58,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:45:58,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:45:58,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:45:58,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:45:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:45:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:45:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:45:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:45:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:45:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:45:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:45:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:45:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:45:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:45:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:45:58,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:45:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:45:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:45:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:45:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:45:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:45:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:45:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:45:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:45:58,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:45:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:45:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:45:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:45:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:45:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:45:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:45:58,180 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:45:58,367 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:45:58,368 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:45:58,759 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:45:58,759 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:45:59,042 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:45:59,042 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:45:59,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:59 BoogieIcfgContainer [2024-01-31 16:45:59,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:45:59,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:45:59,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:45:59,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:45:59,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:45:56" (1/4) ... [2024-01-31 16:45:59,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140405a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:45:59, skipping insertion in model container [2024-01-31 16:45:59,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:45:57" (2/4) ... [2024-01-31 16:45:59,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140405a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:45:59, skipping insertion in model container [2024-01-31 16:45:59,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:45:57" (3/4) ... [2024-01-31 16:45:59,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140405a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:45:59, skipping insertion in model container [2024-01-31 16:45:59,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:45:59" (4/4) ... [2024-01-31 16:45:59,050 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-01-31 16:45:59,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:45:59,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:45:59,064 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:45:59,108 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:45:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 105 flow [2024-01-31 16:45:59,171 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-01-31 16:45:59,171 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:45:59,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 9/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-01-31 16:45:59,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 105 flow [2024-01-31 16:45:59,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 94 flow [2024-01-31 16:45:59,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:45:59,201 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=LoopHeads, 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;@1defab7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:45:59,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:45:59,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:45:59,218 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-01-31 16:45:59,218 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:45:59,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:45:59,219 INFO L208 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] [2024-01-31 16:45:59,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:45:59,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:45:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1204000408, now seen corresponding path program 1 times [2024-01-31 16:45:59,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:45:59,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878806181] [2024-01-31 16:45:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:45:59,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:45:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:45:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:45:59,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:45:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878806181] [2024-01-31 16:45:59,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878806181] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:45:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:45:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:45:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208147580] [2024-01-31 16:45:59,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:45:59,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:45:59,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:45:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:45:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:45:59,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:45:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-01-31 16:45:59,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:45:59,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:45:59,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:00,223 INFO L124 PetriNetUnfolderBase]: 1803/2446 cut-off events. [2024-01-31 16:46:00,223 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-01-31 16:46:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2446 events. 1803/2446 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 10118 event pairs, 991 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 2641. Up to 1506 conditions per place. [2024-01-31 16:46:00,236 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 33 selfloop transitions, 2 changer transitions 28/67 dead transitions. [2024-01-31 16:46:00,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 296 flow [2024-01-31 16:46:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:46:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:46:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-01-31 16:46:00,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-01-31 16:46:00,247 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 94 flow. Second operand 4 states and 93 transitions. [2024-01-31 16:46:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 296 flow [2024-01-31 16:46:00,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:46:00,255 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 98 flow [2024-01-31 16:46:00,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2024-01-31 16:46:00,259 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2024-01-31 16:46:00,259 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 98 flow [2024-01-31 16:46:00,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-01-31 16:46:00,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:00,260 INFO L208 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] [2024-01-31 16:46:00,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:46:00,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:00,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1838637474, now seen corresponding path program 1 times [2024-01-31 16:46:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906804658] [2024-01-31 16:46:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:00,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:00,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:00,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906804658] [2024-01-31 16:46:00,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906804658] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:00,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175154173] [2024-01-31 16:46:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:00,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:00,545 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) [2024-01-31 16:46:00,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:46:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:00,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:46:00,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:00,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:00,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:46:00,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2024-01-31 16:46:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:46:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175154173] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:01,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 16:46:01,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 11 [2024-01-31 16:46:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066854495] [2024-01-31 16:46:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:01,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:01,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:01,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-01-31 16:46:01,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:01,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-01-31 16:46:01,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:01,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:01,296 INFO L124 PetriNetUnfolderBase]: 2118/2869 cut-off events. [2024-01-31 16:46:01,296 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-01-31 16:46:01,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 2869 events. 2118/2869 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12529 event pairs, 498 based on Foata normal form. 1/2142 useless extension candidates. Maximal degree in co-relation 6016. Up to 1163 conditions per place. [2024-01-31 16:46:01,309 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 54 selfloop transitions, 4 changer transitions 22/84 dead transitions. [2024-01-31 16:46:01,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 84 transitions, 364 flow [2024-01-31 16:46:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-01-31 16:46:01,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-01-31 16:46:01,311 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 98 flow. Second operand 5 states and 116 transitions. [2024-01-31 16:46:01,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 84 transitions, 364 flow [2024-01-31 16:46:01,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 84 transitions, 350 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-31 16:46:01,315 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 112 flow [2024-01-31 16:46:01,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-01-31 16:46:01,315 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-01-31 16:46:01,316 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 112 flow [2024-01-31 16:46:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-01-31 16:46:01,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:01,316 INFO L208 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] [2024-01-31 16:46:01,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 16:46:01,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:01,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:01,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:01,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1639904778, now seen corresponding path program 1 times [2024-01-31 16:46:01,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:01,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559370621] [2024-01-31 16:46:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:01,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559370621] [2024-01-31 16:46:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559370621] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:46:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745551489] [2024-01-31 16:46:01,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:01,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:01,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:01,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:01,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:01,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-01-31 16:46:01,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:01,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:01,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:01,969 INFO L124 PetriNetUnfolderBase]: 2431/3312 cut-off events. [2024-01-31 16:46:01,969 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2024-01-31 16:46:01,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7168 conditions, 3312 events. 2431/3312 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14488 event pairs, 562 based on Foata normal form. 58/2467 useless extension candidates. Maximal degree in co-relation 7150. Up to 2009 conditions per place. [2024-01-31 16:46:01,982 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 57 selfloop transitions, 4 changer transitions 19/84 dead transitions. [2024-01-31 16:46:01,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 84 transitions, 374 flow [2024-01-31 16:46:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-01-31 16:46:01,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-01-31 16:46:01,987 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 112 flow. Second operand 5 states and 115 transitions. [2024-01-31 16:46:01,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 84 transitions, 374 flow [2024-01-31 16:46:01,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 84 transitions, 364 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:01,990 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 134 flow [2024-01-31 16:46:01,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-01-31 16:46:01,991 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-01-31 16:46:01,992 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 134 flow [2024-01-31 16:46:01,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-01-31 16:46:01,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:01,993 INFO L208 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] [2024-01-31 16:46:01,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:46:01,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:01,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:01,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1851873304, now seen corresponding path program 1 times [2024-01-31 16:46:01,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41600623] [2024-01-31 16:46:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:01,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41600623] [2024-01-31 16:46:02,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41600623] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667747003] [2024-01-31 16:46:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:02,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:02,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:02,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:46:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:02,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-31 16:46:02,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:02,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:02,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:46:02,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2024-01-31 16:46:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:02,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667747003] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:02,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 16:46:02,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2024-01-31 16:46:02,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146053174] [2024-01-31 16:46:02,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:02,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-01-31 16:46:02,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:02,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-01-31 16:46:02,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:02,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:02,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:03,302 INFO L124 PetriNetUnfolderBase]: 4916/6895 cut-off events. [2024-01-31 16:46:03,302 INFO L125 PetriNetUnfolderBase]: For 1991/1991 co-relation queries the response was YES. [2024-01-31 16:46:03,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15493 conditions, 6895 events. 4916/6895 cut-off events. For 1991/1991 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 35949 event pairs, 1113 based on Foata normal form. 3/5316 useless extension candidates. Maximal degree in co-relation 15469. Up to 2082 conditions per place. [2024-01-31 16:46:03,326 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 79 selfloop transitions, 6 changer transitions 22/111 dead transitions. [2024-01-31 16:46:03,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 111 transitions, 558 flow [2024-01-31 16:46:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:46:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:46:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-01-31 16:46:03,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-01-31 16:46:03,328 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 134 flow. Second operand 7 states and 148 transitions. [2024-01-31 16:46:03,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 111 transitions, 558 flow [2024-01-31 16:46:03,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 111 transitions, 543 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 16:46:03,330 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 156 flow [2024-01-31 16:46:03,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-01-31 16:46:03,331 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-01-31 16:46:03,331 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 156 flow [2024-01-31 16:46:03,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-01-31 16:46:03,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:03,331 INFO L208 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] [2024-01-31 16:46:03,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:03,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-01-31 16:46:03,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:03,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2062973355, now seen corresponding path program 1 times [2024-01-31 16:46:03,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:03,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522975474] [2024-01-31 16:46:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:03,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522975474] [2024-01-31 16:46:03,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522975474] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:03,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:03,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:46:03,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192761948] [2024-01-31 16:46:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:03,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:46:03,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:46:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:46:03,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:03,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-01-31 16:46:03,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:03,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:03,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:04,097 INFO L124 PetriNetUnfolderBase]: 4323/6144 cut-off events. [2024-01-31 16:46:04,098 INFO L125 PetriNetUnfolderBase]: For 2278/2278 co-relation queries the response was YES. [2024-01-31 16:46:04,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14625 conditions, 6144 events. 4323/6144 cut-off events. For 2278/2278 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 31418 event pairs, 1295 based on Foata normal form. 138/5397 useless extension candidates. Maximal degree in co-relation 14597. Up to 3609 conditions per place. [2024-01-31 16:46:04,124 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 60 selfloop transitions, 4 changer transitions 21/89 dead transitions. [2024-01-31 16:46:04,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 460 flow [2024-01-31 16:46:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:46:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:46:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-01-31 16:46:04,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-01-31 16:46:04,126 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 156 flow. Second operand 5 states and 113 transitions. [2024-01-31 16:46:04,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 460 flow [2024-01-31 16:46:04,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 89 transitions, 452 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:04,129 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 168 flow [2024-01-31 16:46:04,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-01-31 16:46:04,130 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-01-31 16:46:04,130 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 168 flow [2024-01-31 16:46:04,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-01-31 16:46:04,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:04,131 INFO L208 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] [2024-01-31 16:46:04,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:46:04,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:04,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash -100603553, now seen corresponding path program 1 times [2024-01-31 16:46:04,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:04,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706500051] [2024-01-31 16:46:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:04,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:04,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:04,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706500051] [2024-01-31 16:46:04,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706500051] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:04,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720320389] [2024-01-31 16:46:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:04,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:04,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:04,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:04,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:46:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:04,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 16:46:04,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:04,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:04,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720320389] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:04,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 16:46:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2024-01-31 16:46:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630227878] [2024-01-31 16:46:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:46:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:46:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-01-31 16:46:04,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:04,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-01-31 16:46:04,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:04,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:04,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:05,352 INFO L124 PetriNetUnfolderBase]: 6804/9915 cut-off events. [2024-01-31 16:46:05,353 INFO L125 PetriNetUnfolderBase]: For 6391/6391 co-relation queries the response was YES. [2024-01-31 16:46:05,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24439 conditions, 9915 events. 6804/9915 cut-off events. For 6391/6391 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 55024 event pairs, 2469 based on Foata normal form. 0/9058 useless extension candidates. Maximal degree in co-relation 24410. Up to 4048 conditions per place. [2024-01-31 16:46:05,388 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 81 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-01-31 16:46:05,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 514 flow [2024-01-31 16:46:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:46:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:46:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-01-31 16:46:05,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-01-31 16:46:05,390 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 168 flow. Second operand 7 states and 125 transitions. [2024-01-31 16:46:05,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 514 flow [2024-01-31 16:46:05,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 502 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 16:46:05,393 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 190 flow [2024-01-31 16:46:05,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-01-31 16:46:05,394 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-01-31 16:46:05,394 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 190 flow [2024-01-31 16:46:05,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-01-31 16:46:05,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:05,394 INFO L208 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] [2024-01-31 16:46:05,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-31 16:46:05,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:05,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:05,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:05,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1102701806, now seen corresponding path program 1 times [2024-01-31 16:46:05,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:05,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172000290] [2024-01-31 16:46:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:05,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:07,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:07,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172000290] [2024-01-31 16:46:07,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172000290] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:46:07,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:46:07,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:46:07,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131376584] [2024-01-31 16:46:07,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:46:07,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:46:07,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:46:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:46:07,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:07,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2024-01-31 16:46:07,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:07,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:07,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:08,183 INFO L124 PetriNetUnfolderBase]: 7133/10370 cut-off events. [2024-01-31 16:46:08,183 INFO L125 PetriNetUnfolderBase]: For 6836/6836 co-relation queries the response was YES. [2024-01-31 16:46:08,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27070 conditions, 10370 events. 7133/10370 cut-off events. For 6836/6836 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 57934 event pairs, 2247 based on Foata normal form. 2/10370 useless extension candidates. Maximal degree in co-relation 27038. Up to 9421 conditions per place. [2024-01-31 16:46:08,231 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 82 selfloop transitions, 13 changer transitions 2/101 dead transitions. [2024-01-31 16:46:08,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 101 transitions, 554 flow [2024-01-31 16:46:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:46:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:46:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-01-31 16:46:08,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-01-31 16:46:08,233 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 190 flow. Second operand 6 states and 132 transitions. [2024-01-31 16:46:08,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 101 transitions, 554 flow [2024-01-31 16:46:08,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:08,239 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 306 flow [2024-01-31 16:46:08,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-01-31 16:46:08,240 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-01-31 16:46:08,240 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 306 flow [2024-01-31 16:46:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2024-01-31 16:46:08,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:08,241 INFO L208 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] [2024-01-31 16:46:08,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:46:08,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:08,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash 158671072, now seen corresponding path program 1 times [2024-01-31 16:46:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331743823] [2024-01-31 16:46:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:08,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331743823] [2024-01-31 16:46:08,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331743823] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:08,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200259923] [2024-01-31 16:46:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:08,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:08,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:08,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:08,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:46:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:08,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 16:46:08,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:08,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:08,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:46:08,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 39 [2024-01-31 16:46:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:46:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200259923] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:08,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:08,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-01-31 16:46:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590022695] [2024-01-31 16:46:08,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:08,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 16:46:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 16:46:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-01-31 16:46:08,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:08,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 306 flow. Second operand has 13 states, 13 states have (on average 12.615384615384615) internal successors, (164), 13 states have internal predecessors, (164), 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) [2024-01-31 16:46:08,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:08,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:08,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:10,455 INFO L124 PetriNetUnfolderBase]: 12073/17711 cut-off events. [2024-01-31 16:46:10,455 INFO L125 PetriNetUnfolderBase]: For 21104/21107 co-relation queries the response was YES. [2024-01-31 16:46:10,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50055 conditions, 17711 events. 12073/17711 cut-off events. For 21104/21107 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 107817 event pairs, 8292 based on Foata normal form. 287/17983 useless extension candidates. Maximal degree in co-relation 46085. Up to 10340 conditions per place. [2024-01-31 16:46:10,546 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 94 selfloop transitions, 5 changer transitions 26/129 dead transitions. [2024-01-31 16:46:10,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 129 transitions, 911 flow [2024-01-31 16:46:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:46:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:46:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-01-31 16:46:10,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-01-31 16:46:10,548 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 306 flow. Second operand 7 states and 136 transitions. [2024-01-31 16:46:10,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 129 transitions, 911 flow [2024-01-31 16:46:10,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 129 transitions, 896 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 16:46:10,572 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 350 flow [2024-01-31 16:46:10,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=350, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-01-31 16:46:10,574 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2024-01-31 16:46:10,574 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 350 flow [2024-01-31 16:46:10,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.615384615384615) internal successors, (164), 13 states have internal predecessors, (164), 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) [2024-01-31 16:46:10,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:10,575 INFO L208 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] [2024-01-31 16:46:10,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-31 16:46:10,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:10,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:10,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1385607100, now seen corresponding path program 1 times [2024-01-31 16:46:10,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:10,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227651912] [2024-01-31 16:46:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:10,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:12,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:12,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227651912] [2024-01-31 16:46:12,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227651912] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:12,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308727479] [2024-01-31 16:46:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:12,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:12,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:12,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:12,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 16:46:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:12,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-31 16:46:12,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:12,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:13,565 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-01-31 16:46:13,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 236 [2024-01-31 16:46:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:20,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308727479] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:20,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:20,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2024-01-31 16:46:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826938374] [2024-01-31 16:46:20,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:20,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 16:46:20,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:20,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 16:46:20,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-01-31 16:46:20,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:20,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 350 flow. Second operand has 22 states, 22 states have (on average 10.954545454545455) internal successors, (241), 22 states have internal predecessors, (241), 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) [2024-01-31 16:46:20,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:20,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:20,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:25,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 16:46:29,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 16:46:33,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-01-31 16:46:34,541 INFO L124 PetriNetUnfolderBase]: 13863/20390 cut-off events. [2024-01-31 16:46:34,541 INFO L125 PetriNetUnfolderBase]: For 21460/21474 co-relation queries the response was YES. [2024-01-31 16:46:34,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57804 conditions, 20390 events. 13863/20390 cut-off events. For 21460/21474 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 128530 event pairs, 3254 based on Foata normal form. 22/20410 useless extension candidates. Maximal degree in co-relation 48999. Up to 11693 conditions per place. [2024-01-31 16:46:34,672 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 168 selfloop transitions, 47 changer transitions 4/223 dead transitions. [2024-01-31 16:46:34,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 223 transitions, 1408 flow [2024-01-31 16:46:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 16:46:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 16:46:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 315 transitions. [2024-01-31 16:46:34,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-01-31 16:46:34,675 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 350 flow. Second operand 16 states and 315 transitions. [2024-01-31 16:46:34,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 223 transitions, 1408 flow [2024-01-31 16:46:34,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 223 transitions, 1388 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:34,740 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 754 flow [2024-01-31 16:46:34,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=754, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-01-31 16:46:34,741 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2024-01-31 16:46:34,741 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 754 flow [2024-01-31 16:46:34,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.954545454545455) internal successors, (241), 22 states have internal predecessors, (241), 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) [2024-01-31 16:46:34,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:34,741 INFO L208 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] [2024-01-31 16:46:34,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-01-31 16:46:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:34,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:34,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 492258170, now seen corresponding path program 2 times [2024-01-31 16:46:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532980720] [2024-01-31 16:46:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:35,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532980720] [2024-01-31 16:46:35,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532980720] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347750779] [2024-01-31 16:46:35,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:46:35,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:35,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:35,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:35,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 16:46:35,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:46:35,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:46:35,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 38 conjunts are in the unsatisfiable core [2024-01-31 16:46:35,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:36,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:37,449 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-01-31 16:46:37,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 235 [2024-01-31 16:46:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347750779] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:44,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:44,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2024-01-31 16:46:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324033505] [2024-01-31 16:46:44,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-31 16:46:44,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:44,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-31 16:46:44,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-01-31 16:46:44,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:44,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 754 flow. Second operand has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 21 states have internal predecessors, (226), 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) [2024-01-31 16:46:44,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:44,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:44,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:48,080 INFO L124 PetriNetUnfolderBase]: 22141/32694 cut-off events. [2024-01-31 16:46:48,081 INFO L125 PetriNetUnfolderBase]: For 67778/67778 co-relation queries the response was YES. [2024-01-31 16:46:48,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106389 conditions, 32694 events. 22141/32694 cut-off events. For 67778/67778 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 224970 event pairs, 4916 based on Foata normal form. 30/32724 useless extension candidates. Maximal degree in co-relation 102392. Up to 12669 conditions per place. [2024-01-31 16:46:48,313 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 245 selfloop transitions, 96 changer transitions 17/362 dead transitions. [2024-01-31 16:46:48,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 362 transitions, 2738 flow [2024-01-31 16:46:48,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-31 16:46:48,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-31 16:46:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 484 transitions. [2024-01-31 16:46:48,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-01-31 16:46:48,316 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 754 flow. Second operand 24 states and 484 transitions. [2024-01-31 16:46:48,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 362 transitions, 2738 flow [2024-01-31 16:46:48,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 362 transitions, 2647 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-01-31 16:46:48,806 INFO L231 Difference]: Finished difference. Result has 125 places, 148 transitions, 1549 flow [2024-01-31 16:46:48,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1549, PETRI_PLACES=125, PETRI_TRANSITIONS=148} [2024-01-31 16:46:48,806 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2024-01-31 16:46:48,806 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 148 transitions, 1549 flow [2024-01-31 16:46:48,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 21 states have internal predecessors, (226), 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) [2024-01-31 16:46:48,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:46:48,807 INFO L208 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] [2024-01-31 16:46:48,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 16:46:49,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:49,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:46:49,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:46:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1779597508, now seen corresponding path program 1 times [2024-01-31 16:46:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:46:49,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920424205] [2024-01-31 16:46:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:49,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:46:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:46:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:46:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920424205] [2024-01-31 16:46:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920424205] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:46:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860505985] [2024-01-31 16:46:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:46:49,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:46:49,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:46:49,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:46:49,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 16:46:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:46:50,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-31 16:46:50,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:46:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:50,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:46:50,856 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-01-31 16:46:50,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 236 [2024-01-31 16:46:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:46:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860505985] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:46:56,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:46:56,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2024-01-31 16:46:56,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476676894] [2024-01-31 16:46:56,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:46:56,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-31 16:46:56,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:46:56,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-31 16:46:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-01-31 16:46:56,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:46:56,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 148 transitions, 1549 flow. Second operand has 22 states, 22 states have (on average 10.954545454545455) internal successors, (241), 22 states have internal predecessors, (241), 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) [2024-01-31 16:46:56,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:46:56,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:46:56,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:46:59,787 INFO L124 PetriNetUnfolderBase]: 24837/36746 cut-off events. [2024-01-31 16:46:59,787 INFO L125 PetriNetUnfolderBase]: For 141572/141578 co-relation queries the response was YES. [2024-01-31 16:47:00,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137917 conditions, 36746 events. 24837/36746 cut-off events. For 141572/141578 co-relation queries the response was YES. Maximal size of possible extension queue 1738. Compared 255789 event pairs, 6682 based on Foata normal form. 20/36764 useless extension candidates. Maximal degree in co-relation 133408. Up to 26563 conditions per place. [2024-01-31 16:47:00,176 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 172 selfloop transitions, 62 changer transitions 3/241 dead transitions. [2024-01-31 16:47:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 241 transitions, 2564 flow [2024-01-31 16:47:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:47:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:47:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-01-31 16:47:00,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-01-31 16:47:00,178 INFO L175 Difference]: Start difference. First operand has 125 places, 148 transitions, 1549 flow. Second operand 12 states and 217 transitions. [2024-01-31 16:47:00,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 241 transitions, 2564 flow [2024-01-31 16:47:01,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 241 transitions, 2354 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-01-31 16:47:01,440 INFO L231 Difference]: Finished difference. Result has 131 places, 161 transitions, 1695 flow [2024-01-31 16:47:01,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1695, PETRI_PLACES=131, PETRI_TRANSITIONS=161} [2024-01-31 16:47:01,441 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2024-01-31 16:47:01,441 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 161 transitions, 1695 flow [2024-01-31 16:47:01,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.954545454545455) internal successors, (241), 22 states have internal predecessors, (241), 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) [2024-01-31 16:47:01,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:01,441 INFO L208 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] [2024-01-31 16:47:01,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-31 16:47:01,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:01,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:01,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1855955960, now seen corresponding path program 2 times [2024-01-31 16:47:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179790595] [2024-01-31 16:47:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:01,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 16:47:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179790595] [2024-01-31 16:47:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179790595] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:47:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906950118] [2024-01-31 16:47:03,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:47:03,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:03,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:03,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:47:03,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 16:47:03,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:47:03,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:47:03,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 31 conjunts are in the unsatisfiable core [2024-01-31 16:47:03,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:47:03,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:47:04,252 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-01-31 16:47:04,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 236 [2024-01-31 16:47:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-31 16:47:08,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906950118] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:47:08,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:47:08,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 20 [2024-01-31 16:47:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569019384] [2024-01-31 16:47:08,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:47:08,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-01-31 16:47:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-01-31 16:47:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-01-31 16:47:08,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:47:08,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 161 transitions, 1695 flow. Second operand has 21 states, 21 states have (on average 10.714285714285714) internal successors, (225), 21 states have internal predecessors, (225), 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) [2024-01-31 16:47:08,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:08,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:47:08,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:13,990 INFO L124 PetriNetUnfolderBase]: 30947/45728 cut-off events. [2024-01-31 16:47:13,990 INFO L125 PetriNetUnfolderBase]: For 201261/201267 co-relation queries the response was YES. [2024-01-31 16:47:14,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176675 conditions, 45728 events. 30947/45728 cut-off events. For 201261/201267 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 327581 event pairs, 8546 based on Foata normal form. 28/45754 useless extension candidates. Maximal degree in co-relation 166453. Up to 27817 conditions per place. [2024-01-31 16:47:14,321 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 206 selfloop transitions, 100 changer transitions 5/315 dead transitions. [2024-01-31 16:47:14,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 315 transitions, 3377 flow [2024-01-31 16:47:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-31 16:47:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-31 16:47:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2024-01-31 16:47:14,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492063492063492 [2024-01-31 16:47:14,333 INFO L175 Difference]: Start difference. First operand has 131 places, 161 transitions, 1695 flow. Second operand 15 states and 283 transitions. [2024-01-31 16:47:14,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 315 transitions, 3377 flow [2024-01-31 16:47:15,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 315 transitions, 3226 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-01-31 16:47:15,908 INFO L231 Difference]: Finished difference. Result has 143 places, 200 transitions, 2403 flow [2024-01-31 16:47:15,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2403, PETRI_PLACES=143, PETRI_TRANSITIONS=200} [2024-01-31 16:47:15,909 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 104 predicate places. [2024-01-31 16:47:15,909 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 200 transitions, 2403 flow [2024-01-31 16:47:15,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.714285714285714) internal successors, (225), 21 states have internal predecessors, (225), 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) [2024-01-31 16:47:15,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:15,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:47:15,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-01-31 16:47:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-31 16:47:16,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:16,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:16,119 INFO L85 PathProgramCache]: Analyzing trace with hash 697274918, now seen corresponding path program 2 times [2024-01-31 16:47:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998523849] [2024-01-31 16:47:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:17,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:17,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998523849] [2024-01-31 16:47:17,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998523849] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:47:17,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316377757] [2024-01-31 16:47:17,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:47:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:17,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:17,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:47:17,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-31 16:47:17,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:47:17,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:47:17,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 38 conjunts are in the unsatisfiable core [2024-01-31 16:47:17,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:47:18,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:47:19,007 INFO L349 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2024-01-31 16:47:19,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 237 [2024-01-31 16:47:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:47:28,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316377757] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:47:28,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:47:28,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 7] total 27 [2024-01-31 16:47:28,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361594006] [2024-01-31 16:47:28,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:47:28,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-01-31 16:47:28,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:47:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-01-31 16:47:28,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-01-31 16:47:28,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-01-31 16:47:28,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 200 transitions, 2403 flow. Second operand has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 28 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) [2024-01-31 16:47:28,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:47:28,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-01-31 16:47:28,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:47:34,442 INFO L124 PetriNetUnfolderBase]: 31969/47256 cut-off events. [2024-01-31 16:47:34,442 INFO L125 PetriNetUnfolderBase]: For 237374/237380 co-relation queries the response was YES. [2024-01-31 16:47:34,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190814 conditions, 47256 events. 31969/47256 cut-off events. For 237374/237380 co-relation queries the response was YES. Maximal size of possible extension queue 2252. Compared 338790 event pairs, 13490 based on Foata normal form. 6/47260 useless extension candidates. Maximal degree in co-relation 180030. Up to 43707 conditions per place. [2024-01-31 16:47:34,886 INFO L140 encePairwiseOnDemand]: 25/42 looper letters, 200 selfloop transitions, 89 changer transitions 42/335 dead transitions. [2024-01-31 16:47:34,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 335 transitions, 3849 flow [2024-01-31 16:47:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-31 16:47:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-31 16:47:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 352 transitions. [2024-01-31 16:47:34,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36438923395445133 [2024-01-31 16:47:34,890 INFO L175 Difference]: Start difference. First operand has 143 places, 200 transitions, 2403 flow. Second operand 23 states and 352 transitions. [2024-01-31 16:47:34,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 335 transitions, 3849 flow [2024-01-31 16:47:37,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 335 transitions, 3651 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-01-31 16:47:37,687 INFO L231 Difference]: Finished difference. Result has 170 places, 225 transitions, 2878 flow [2024-01-31 16:47:37,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2878, PETRI_PLACES=170, PETRI_TRANSITIONS=225} [2024-01-31 16:47:37,689 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2024-01-31 16:47:37,689 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 225 transitions, 2878 flow [2024-01-31 16:47:37,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 28 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) [2024-01-31 16:47:37,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:47:37,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:47:37,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-31 16:47:37,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-31 16:47:37,904 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:47:37,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:47:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash -281826126, now seen corresponding path program 3 times [2024-01-31 16:47:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:47:37,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088010682] [2024-01-31 16:47:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:47:37,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:47:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:47:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:47:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:47:39,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088010682] [2024-01-31 16:47:39,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088010682] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:47:39,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637627547] [2024-01-31 16:47:39,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:47:39,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:47:39,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:47:39,030 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:47:39,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-31 16:47:39,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-31 16:47:39,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:47:39,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 38 conjunts are in the unsatisfiable core [2024-01-31 16:47:39,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:47:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 16:47:39,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:47:40,376 INFO L349 Elim1Store]: treesize reduction 15, result has 95.3 percent of original size [2024-01-31 16:47:40,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 108 treesize of output 328