./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-lamport.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/parallel-lamport.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/parallel-lamport.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-lamport.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 17:00:10,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:00:10,122 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:00:10,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:00:10,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:00:10,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:00:10,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:00:10,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:00:10,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:00:10,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:00:10,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:00:10,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:00:10,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:00:10,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:00:10,149 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:00:10,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:00:10,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:00:10,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:00:10,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:00:10,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:00:10,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:00:10,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:00:10,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:00:10,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:00:10,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:00:10,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:00:10,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:00:10,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:00:10,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:00:10,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:00:10,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:00:10,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:00:10,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:00:10,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:00:10,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:00:10,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:00:10,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:00:10,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:00:10,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:00:10,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:00:10,158 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:00:10,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:00:10,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:00:10,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:00:10,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:00:10,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:00:10,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:00:10,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:00:10,370 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:00:10,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-01-31 17:00:11,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:00:11,500 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:00:11,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-01-31 17:00:11,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233c4d3be/c7d8f63cf00940e68529f793da666330/FLAG4cd4e81a1 [2024-01-31 17:00:11,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233c4d3be/c7d8f63cf00940e68529f793da666330 [2024-01-31 17:00:11,524 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:00:11,524 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:00:11,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-lamport.wvr.yml/witness.yml [2024-01-31 17:00:11,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:00:11,720 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:00:11,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:00:11,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:00:11,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:00:11,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:00:11" (1/2) ... [2024-01-31 17:00:11,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f90aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:11, skipping insertion in model container [2024-01-31 17:00:11,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:00:11" (1/2) ... [2024-01-31 17:00:11,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24d40429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:11, skipping insertion in model container [2024-01-31 17:00:11,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:11" (2/2) ... [2024-01-31 17:00:11,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f90aaa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:11, skipping insertion in model container [2024-01-31 17:00:11,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:11" (2/2) ... [2024-01-31 17:00:11,730 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:00:11,801 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:00:11,826 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:00:11,972 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/parallel-lamport.wvr.c[4249,4262] [2024-01-31 17:00:11,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:00:12,005 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:00:12,036 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/parallel-lamport.wvr.c[4249,4262] [2024-01-31 17:00:12,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:00:12,055 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:00:12,057 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12 WrapperNode [2024-01-31 17:00:12,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:00:12,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:00:12,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:00:12,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:00:12,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,095 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 246 [2024-01-31 17:00:12,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:00:12,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:00:12,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:00:12,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:00:12,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,130 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 2, 2, 2, 5]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:00:12,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:00:12,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:00:12,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:00:12,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:00:12,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (1/1) ... [2024-01-31 17:00:12,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:00:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:12,172 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 17:00:12,179 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 17:00:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:00:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:00:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:00:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:00:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:00:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:00:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:00:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:00:12,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:00:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:00:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:00:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:00:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:00:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:00:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:00:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:00:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:00:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:00:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:00:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:00:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:00:12,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:00:12,207 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 17:00:12,300 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:00:12,302 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:00:12,560 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:00:12,561 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:00:12,780 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:00:12,780 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-31 17:00:12,782 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:00:12 BoogieIcfgContainer [2024-01-31 17:00:12,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:00:12,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:00:12,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:00:12,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:00:12,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:00:11" (1/4) ... [2024-01-31 17:00:12,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1aa0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:00:12, skipping insertion in model container [2024-01-31 17:00:12,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:11" (2/4) ... [2024-01-31 17:00:12,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1aa0ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:00:12, skipping insertion in model container [2024-01-31 17:00:12,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:12" (3/4) ... [2024-01-31 17:00:12,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1aa0ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:00:12, skipping insertion in model container [2024-01-31 17:00:12,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:00:12" (4/4) ... [2024-01-31 17:00:12,791 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-01-31 17:00:12,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:00:12,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:00:12,805 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:00:12,847 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 17:00:12,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 119 flow [2024-01-31 17:00:12,903 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-01-31 17:00:12,903 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:00:12,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-01-31 17:00:12,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 119 flow [2024-01-31 17:00:12,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 108 flow [2024-01-31 17:00:12,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:00:12,921 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;@3bee43a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:00:12,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 17:00:12,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:00:12,938 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-01-31 17:00:12,939 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 17:00:12,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:12,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:12,940 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 17:00:12,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1897879560, now seen corresponding path program 1 times [2024-01-31 17:00:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:12,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466031600] [2024-01-31 17:00:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:13,490 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 17:00:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466031600] [2024-01-31 17:00:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466031600] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:13,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:13,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:00:13,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423972521] [2024-01-31 17:00:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:13,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:00:13,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:00:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:00:13,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-31 17:00:13,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 17:00:13,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:13,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-31 17:00:13,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:13,779 INFO L124 PetriNetUnfolderBase]: 946/1665 cut-off events. [2024-01-31 17:00:13,779 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-01-31 17:00:13,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3257 conditions, 1665 events. 946/1665 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9596 event pairs, 945 based on Foata normal form. 0/1628 useless extension candidates. Maximal degree in co-relation 2847. Up to 1465 conditions per place. [2024-01-31 17:00:13,793 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-01-31 17:00:13,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 170 flow [2024-01-31 17:00:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:13,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-01-31 17:00:13,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-01-31 17:00:13,805 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 108 flow. Second operand 3 states and 88 transitions. [2024-01-31 17:00:13,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 170 flow [2024-01-31 17:00:13,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 17:00:13,814 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 108 flow [2024-01-31 17:00:13,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-01-31 17:00:13,819 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-01-31 17:00:13,819 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 108 flow [2024-01-31 17:00:13,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 17:00:13,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:13,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:13,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:00:13,820 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 17:00:13,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1408818239, now seen corresponding path program 1 times [2024-01-31 17:00:13,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:13,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354542147] [2024-01-31 17:00:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:14,047 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 17:00:14,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354542147] [2024-01-31 17:00:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354542147] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:14,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:14,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:00:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490662526] [2024-01-31 17:00:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:00:14,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:00:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:00:14,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-01-31 17:00:14,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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 17:00:14,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:14,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-01-31 17:00:14,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:14,675 INFO L124 PetriNetUnfolderBase]: 3950/6503 cut-off events. [2024-01-31 17:00:14,675 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-01-31 17:00:14,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12653 conditions, 6503 events. 3950/6503 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 40753 event pairs, 737 based on Foata normal form. 60/6545 useless extension candidates. Maximal degree in co-relation 12642. Up to 1730 conditions per place. [2024-01-31 17:00:14,703 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 133 selfloop transitions, 16 changer transitions 0/159 dead transitions. [2024-01-31 17:00:14,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 159 transitions, 646 flow [2024-01-31 17:00:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:00:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:00:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 266 transitions. [2024-01-31 17:00:14,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-01-31 17:00:14,706 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 108 flow. Second operand 9 states and 266 transitions. [2024-01-31 17:00:14,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 159 transitions, 646 flow [2024-01-31 17:00:14,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 159 transitions, 642 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:14,709 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 200 flow [2024-01-31 17:00:14,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-01-31 17:00:14,710 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-01-31 17:00:14,710 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 200 flow [2024-01-31 17:00:14,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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 17:00:14,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:14,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:14,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:00:14,710 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 17:00:14,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2077458203, now seen corresponding path program 2 times [2024-01-31 17:00:14,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:14,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676686284] [2024-01-31 17:00:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:14,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:15,283 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 17:00:15,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676686284] [2024-01-31 17:00:15,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676686284] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:15,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857465393] [2024-01-31 17:00:15,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:00:15,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:15,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:15,287 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 17:00:15,294 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 17:00:15,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 17:00:15,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:15,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:00:15,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:15,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:15,677 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:15,689 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 17:00:15,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:00:15,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857465393] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:15,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:00:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-01-31 17:00:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579202254] [2024-01-31 17:00:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:15,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-01-31 17:00:15,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:15,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:15,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:15,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:15,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:16,528 INFO L124 PetriNetUnfolderBase]: 4647/7596 cut-off events. [2024-01-31 17:00:16,529 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2024-01-31 17:00:16,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15704 conditions, 7596 events. 4647/7596 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 49690 event pairs, 901 based on Foata normal form. 2/7434 useless extension candidates. Maximal degree in co-relation 15683. Up to 4017 conditions per place. [2024-01-31 17:00:16,572 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 98 selfloop transitions, 18 changer transitions 8/152 dead transitions. [2024-01-31 17:00:16,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 152 transitions, 648 flow [2024-01-31 17:00:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:00:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:00:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 294 transitions. [2024-01-31 17:00:16,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 17:00:16,577 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 200 flow. Second operand 10 states and 294 transitions. [2024-01-31 17:00:16,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 152 transitions, 648 flow [2024-01-31 17:00:16,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 152 transitions, 648 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:16,668 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 297 flow [2024-01-31 17:00:16,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-01-31 17:00:16,669 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-01-31 17:00:16,669 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 297 flow [2024-01-31 17:00:16,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:16,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:16,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:16,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:16,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:16,871 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 17:00:16,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash 332169557, now seen corresponding path program 3 times [2024-01-31 17:00:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:16,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253738770] [2024-01-31 17:00:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:16,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:17,212 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 17:00:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253738770] [2024-01-31 17:00:17,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253738770] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551638183] [2024-01-31 17:00:17,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:00:17,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:17,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:17,215 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 17:00:17,232 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 17:00:17,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 17:00:17,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:17,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:00:17,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:17,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:17,500 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:17,515 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 17:00:17,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:00:17,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551638183] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:17,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:00:17,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-01-31 17:00:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370711346] [2024-01-31 17:00:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-01-31 17:00:17,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:17,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:17,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:17,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:17,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:18,951 INFO L124 PetriNetUnfolderBase]: 7911/13094 cut-off events. [2024-01-31 17:00:18,952 INFO L125 PetriNetUnfolderBase]: For 3508/3508 co-relation queries the response was YES. [2024-01-31 17:00:18,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30466 conditions, 13094 events. 7911/13094 cut-off events. For 3508/3508 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 95639 event pairs, 2376 based on Foata normal form. 2/12877 useless extension candidates. Maximal degree in co-relation 30439. Up to 6058 conditions per place. [2024-01-31 17:00:19,017 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 146 selfloop transitions, 25 changer transitions 10/209 dead transitions. [2024-01-31 17:00:19,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 209 transitions, 1039 flow [2024-01-31 17:00:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:00:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:00:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 342 transitions. [2024-01-31 17:00:19,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634508348794063 [2024-01-31 17:00:19,019 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 297 flow. Second operand 11 states and 342 transitions. [2024-01-31 17:00:19,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 209 transitions, 1039 flow [2024-01-31 17:00:19,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 209 transitions, 1039 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:19,037 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 519 flow [2024-01-31 17:00:19,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=519, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2024-01-31 17:00:19,038 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-01-31 17:00:19,038 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 519 flow [2024-01-31 17:00:19,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:19,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:19,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:19,052 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 17:00:19,250 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 17:00:19,250 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 17:00:19,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1782826855, now seen corresponding path program 4 times [2024-01-31 17:00:19,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:19,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754376314] [2024-01-31 17:00:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:19,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:19,574 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 17:00:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754376314] [2024-01-31 17:00:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754376314] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202992809] [2024-01-31 17:00:19,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:00:19,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:19,577 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 17:00:19,596 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 17:00:19,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:00:19,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:19,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:00:19,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:19,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:19,808 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:19,820 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 17:00:19,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:00:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202992809] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:19,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:00:19,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-01-31 17:00:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803870108] [2024-01-31 17:00:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:19,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:19,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-01-31 17:00:19,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:19,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 519 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:19,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:19,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:19,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:21,415 INFO L124 PetriNetUnfolderBase]: 8805/14832 cut-off events. [2024-01-31 17:00:21,416 INFO L125 PetriNetUnfolderBase]: For 12967/12967 co-relation queries the response was YES. [2024-01-31 17:00:21,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39166 conditions, 14832 events. 8805/14832 cut-off events. For 12967/12967 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 112282 event pairs, 2434 based on Foata normal form. 2/14570 useless extension candidates. Maximal degree in co-relation 39129. Up to 10385 conditions per place. [2024-01-31 17:00:21,492 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 107 selfloop transitions, 24 changer transitions 21/180 dead transitions. [2024-01-31 17:00:21,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 180 transitions, 1097 flow [2024-01-31 17:00:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:00:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:00:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-01-31 17:00:21,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938775510204082 [2024-01-31 17:00:21,494 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 519 flow. Second operand 10 states and 291 transitions. [2024-01-31 17:00:21,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 180 transitions, 1097 flow [2024-01-31 17:00:21,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 180 transitions, 1081 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:21,589 INFO L231 Difference]: Finished difference. Result has 105 places, 106 transitions, 642 flow [2024-01-31 17:00:21,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=642, PETRI_PLACES=105, PETRI_TRANSITIONS=106} [2024-01-31 17:00:21,590 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-01-31 17:00:21,590 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 106 transitions, 642 flow [2024-01-31 17:00:21,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:21,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:21,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:21,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:21,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:21,802 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 17:00:21,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1863072719, now seen corresponding path program 5 times [2024-01-31 17:00:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288208427] [2024-01-31 17:00:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:21,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:22,168 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 17:00:22,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:22,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288208427] [2024-01-31 17:00:22,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288208427] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800334016] [2024-01-31 17:00:22,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:00:22,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:22,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:22,170 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 17:00:22,174 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 17:00:22,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:00:22,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:22,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 24 conjunts are in the unsatisfiable core [2024-01-31 17:00:22,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:22,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-31 17:00:22,465 INFO L349 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2024-01-31 17:00:22,465 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 22 [2024-01-31 17:00:22,544 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 17:00:22,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:22,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2024-01-31 17:00:22,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:22,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 124 [2024-01-31 17:00:23,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-01-31 17:00:23,347 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-01-31 17:00:23,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 1 [2024-01-31 17:00:23,375 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 17:00:23,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800334016] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:23,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:23,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 23 [2024-01-31 17:00:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487110088] [2024-01-31 17:00:23,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:23,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-01-31 17:00:23,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-01-31 17:00:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-01-31 17:00:23,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-31 17:00:23,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 642 flow. Second operand has 24 states, 24 states have (on average 21.541666666666668) internal successors, (517), 24 states have internal predecessors, (517), 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 17:00:23,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:23,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-31 17:00:23,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:26,759 INFO L124 PetriNetUnfolderBase]: 18847/32124 cut-off events. [2024-01-31 17:00:26,759 INFO L125 PetriNetUnfolderBase]: For 35297/35335 co-relation queries the response was YES. [2024-01-31 17:00:27,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86272 conditions, 32124 events. 18847/32124 cut-off events. For 35297/35335 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 280995 event pairs, 5699 based on Foata normal form. 42/31452 useless extension candidates. Maximal degree in co-relation 86161. Up to 12029 conditions per place. [2024-01-31 17:00:27,180 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 76 selfloop transitions, 9 changer transitions 250/367 dead transitions. [2024-01-31 17:00:27,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 367 transitions, 2683 flow [2024-01-31 17:00:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-31 17:00:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-31 17:00:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 498 transitions. [2024-01-31 17:00:27,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352040816326531 [2024-01-31 17:00:27,182 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 642 flow. Second operand 16 states and 498 transitions. [2024-01-31 17:00:27,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 367 transitions, 2683 flow [2024-01-31 17:00:27,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 367 transitions, 2499 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-01-31 17:00:27,694 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 772 flow [2024-01-31 17:00:27,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=772, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-01-31 17:00:27,695 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-01-31 17:00:27,695 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 772 flow [2024-01-31 17:00:27,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 21.541666666666668) internal successors, (517), 24 states have internal predecessors, (517), 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 17:00:27,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:27,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:27,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:27,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:27,899 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 17:00:27,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash -154509818, now seen corresponding path program 6 times [2024-01-31 17:00:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:27,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345989843] [2024-01-31 17:00:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:27,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345989843] [2024-01-31 17:00:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345989843] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651236036] [2024-01-31 17:00:29,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:00:29,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:29,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:29,580 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 17:00:29,615 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 17:00:29,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-31 17:00:29,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:29,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:00:29,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:29,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:29,885 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:29,892 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 17:00:29,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:00:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651236036] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:00:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2024-01-31 17:00:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964823967] [2024-01-31 17:00:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:00:29,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:29,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 772 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:29,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:29,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:29,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:31,593 INFO L124 PetriNetUnfolderBase]: 9787/16605 cut-off events. [2024-01-31 17:00:31,594 INFO L125 PetriNetUnfolderBase]: For 74289/74289 co-relation queries the response was YES. [2024-01-31 17:00:31,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66496 conditions, 16605 events. 9787/16605 cut-off events. For 74289/74289 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 129792 event pairs, 2932 based on Foata normal form. 2/16331 useless extension candidates. Maximal degree in co-relation 66440. Up to 10276 conditions per place. [2024-01-31 17:00:31,823 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 142 selfloop transitions, 35 changer transitions 10/215 dead transitions. [2024-01-31 17:00:31,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 215 transitions, 1788 flow [2024-01-31 17:00:31,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:00:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:00:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 330 transitions. [2024-01-31 17:00:31,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-01-31 17:00:31,825 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 772 flow. Second operand 11 states and 330 transitions. [2024-01-31 17:00:31,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 215 transitions, 1788 flow [2024-01-31 17:00:32,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 215 transitions, 1654 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-01-31 17:00:32,041 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1033 flow [2024-01-31 17:00:32,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1033, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-01-31 17:00:32,042 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-01-31 17:00:32,042 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1033 flow [2024-01-31 17:00:32,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:32,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:32,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:32,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:32,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:32,243 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 17:00:32,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash -106242026, now seen corresponding path program 7 times [2024-01-31 17:00:32,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:32,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299646426] [2024-01-31 17:00:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299646426] [2024-01-31 17:00:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299646426] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449332158] [2024-01-31 17:00:33,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:00:33,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:33,813 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 17:00:33,840 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 17:00:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:33,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:00:33,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:34,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:34,092 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:34,099 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 17:00:34,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:34,249 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-01-31 17:00:34,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-01-31 17:00:34,282 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 17:00:34,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449332158] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:34,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:00:34,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2024-01-31 17:00:34,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570355550] [2024-01-31 17:00:34,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:34,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2024-01-31 17:00:34,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:34,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1033 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:34,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:34,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:34,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:36,805 INFO L124 PetriNetUnfolderBase]: 12693/21711 cut-off events. [2024-01-31 17:00:36,805 INFO L125 PetriNetUnfolderBase]: For 84235/84235 co-relation queries the response was YES. [2024-01-31 17:00:36,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83419 conditions, 21711 events. 12693/21711 cut-off events. For 84235/84235 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 178532 event pairs, 3795 based on Foata normal form. 2/21386 useless extension candidates. Maximal degree in co-relation 83362. Up to 10720 conditions per place. [2024-01-31 17:00:36,990 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 220 selfloop transitions, 63 changer transitions 6/317 dead transitions. [2024-01-31 17:00:36,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 317 transitions, 2811 flow [2024-01-31 17:00:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 17:00:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 17:00:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 520 transitions. [2024-01-31 17:00:36,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242496998799519 [2024-01-31 17:00:36,993 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1033 flow. Second operand 17 states and 520 transitions. [2024-01-31 17:00:36,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 317 transitions, 2811 flow [2024-01-31 17:00:37,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 317 transitions, 2600 flow, removed 101 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:37,551 INFO L231 Difference]: Finished difference. Result has 147 places, 155 transitions, 1496 flow [2024-01-31 17:00:37,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1496, PETRI_PLACES=147, PETRI_TRANSITIONS=155} [2024-01-31 17:00:37,552 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-01-31 17:00:37,552 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 155 transitions, 1496 flow [2024-01-31 17:00:37,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:37,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:37,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:37,568 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 17:00:37,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:37,756 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 17:00:37,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:37,756 INFO L85 PathProgramCache]: Analyzing trace with hash -157112034, now seen corresponding path program 8 times [2024-01-31 17:00:37,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:37,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477401245] [2024-01-31 17:00:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:37,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:39,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477401245] [2024-01-31 17:00:39,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477401245] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580206649] [2024-01-31 17:00:39,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:00:39,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:39,540 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 17:00:39,554 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 17:00:39,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 17:00:39,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:39,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-31 17:00:39,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:39,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:39,791 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:39,805 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 17:00:39,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:00:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580206649] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:39,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:00:39,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-01-31 17:00:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497813550] [2024-01-31 17:00:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:39,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:00:39,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:39,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 155 transitions, 1496 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:39,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:39,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:39,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:42,299 INFO L124 PetriNetUnfolderBase]: 12655/21625 cut-off events. [2024-01-31 17:00:42,300 INFO L125 PetriNetUnfolderBase]: For 87033/87033 co-relation queries the response was YES. [2024-01-31 17:00:42,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84473 conditions, 21625 events. 12655/21625 cut-off events. For 87033/87033 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 177888 event pairs, 4740 based on Foata normal form. 2/21255 useless extension candidates. Maximal degree in co-relation 84410. Up to 15414 conditions per place. [2024-01-31 17:00:42,474 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 131 selfloop transitions, 38 changer transitions 39/236 dead transitions. [2024-01-31 17:00:42,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 236 transitions, 2249 flow [2024-01-31 17:00:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:00:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:00:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-01-31 17:00:42,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6183673469387755 [2024-01-31 17:00:42,475 INFO L175 Difference]: Start difference. First operand has 147 places, 155 transitions, 1496 flow. Second operand 10 states and 303 transitions. [2024-01-31 17:00:42,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 236 transitions, 2249 flow [2024-01-31 17:00:43,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 236 transitions, 2118 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-01-31 17:00:43,078 INFO L231 Difference]: Finished difference. Result has 154 places, 146 transitions, 1359 flow [2024-01-31 17:00:43,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1359, PETRI_PLACES=154, PETRI_TRANSITIONS=146} [2024-01-31 17:00:43,080 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-01-31 17:00:43,080 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 146 transitions, 1359 flow [2024-01-31 17:00:43,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:43,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:43,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:43,092 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 17:00:43,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:43,295 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 17:00:43,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1624151310, now seen corresponding path program 9 times [2024-01-31 17:00:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:43,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749104041] [2024-01-31 17:00:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:43,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:43,337 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 17:00:43,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:43,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749104041] [2024-01-31 17:00:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749104041] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:43,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:43,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:00:43,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388157272] [2024-01-31 17:00:43,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:43,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:00:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:43,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:00:43,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:00:43,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:43,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 146 transitions, 1359 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 17:00:43,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:43,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:43,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:45,441 INFO L124 PetriNetUnfolderBase]: 10952/19155 cut-off events. [2024-01-31 17:00:45,441 INFO L125 PetriNetUnfolderBase]: For 79657/79929 co-relation queries the response was YES. [2024-01-31 17:00:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73347 conditions, 19155 events. 10952/19155 cut-off events. For 79657/79929 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 157700 event pairs, 9235 based on Foata normal form. 57/18741 useless extension candidates. Maximal degree in co-relation 73284. Up to 16443 conditions per place. [2024-01-31 17:00:45,586 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 129 selfloop transitions, 2 changer transitions 1/169 dead transitions. [2024-01-31 17:00:45,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 169 transitions, 1832 flow [2024-01-31 17:00:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-01-31 17:00:45,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-01-31 17:00:45,587 INFO L175 Difference]: Start difference. First operand has 154 places, 146 transitions, 1359 flow. Second operand 3 states and 96 transitions. [2024-01-31 17:00:45,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 169 transitions, 1832 flow [2024-01-31 17:00:45,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 169 transitions, 1755 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-01-31 17:00:45,893 INFO L231 Difference]: Finished difference. Result has 143 places, 146 transitions, 1301 flow [2024-01-31 17:00:45,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1301, PETRI_PLACES=143, PETRI_TRANSITIONS=146} [2024-01-31 17:00:45,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-01-31 17:00:45,894 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 146 transitions, 1301 flow [2024-01-31 17:00:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 17:00:45,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:45,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:00:45,895 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 17:00:45,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash 125958606, now seen corresponding path program 10 times [2024-01-31 17:00:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:45,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589603756] [2024-01-31 17:00:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:47,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589603756] [2024-01-31 17:00:47,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589603756] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:47,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222902597] [2024-01-31 17:00:47,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:00:47,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:47,244 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 17:00:47,244 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 17:00:47,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:00:47,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:47,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:00:47,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:47,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:47,474 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:47,481 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 17:00:47,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:00:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222902597] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:47,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:00:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2024-01-31 17:00:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020392701] [2024-01-31 17:00:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:47,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:47,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:47,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:47,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:00:47,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:47,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 146 transitions, 1301 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:47,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:47,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:47,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:49,808 INFO L124 PetriNetUnfolderBase]: 12193/20729 cut-off events. [2024-01-31 17:00:49,808 INFO L125 PetriNetUnfolderBase]: For 81535/81546 co-relation queries the response was YES. [2024-01-31 17:00:49,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80867 conditions, 20729 events. 12193/20729 cut-off events. For 81535/81546 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 168783 event pairs, 5611 based on Foata normal form. 2/20381 useless extension candidates. Maximal degree in co-relation 80805. Up to 15913 conditions per place. [2024-01-31 17:00:49,997 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 173 selfloop transitions, 25 changer transitions 19/245 dead transitions. [2024-01-31 17:00:49,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 245 transitions, 2287 flow [2024-01-31 17:00:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:00:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:00:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 324 transitions. [2024-01-31 17:00:49,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601113172541744 [2024-01-31 17:00:49,999 INFO L175 Difference]: Start difference. First operand has 143 places, 146 transitions, 1301 flow. Second operand 11 states and 324 transitions. [2024-01-31 17:00:49,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 245 transitions, 2287 flow [2024-01-31 17:00:50,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 245 transitions, 2283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:00:50,573 INFO L231 Difference]: Finished difference. Result has 154 places, 158 transitions, 1582 flow [2024-01-31 17:00:50,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1582, PETRI_PLACES=154, PETRI_TRANSITIONS=158} [2024-01-31 17:00:50,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-01-31 17:00:50,574 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 158 transitions, 1582 flow [2024-01-31 17:00:50,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:50,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:50,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:50,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:50,788 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,SelfDestructingSolverStorable10 [2024-01-31 17:00:50,789 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 17:00:50,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash 158823208, now seen corresponding path program 11 times [2024-01-31 17:00:50,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:50,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731585887] [2024-01-31 17:00:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:50,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:51,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731585887] [2024-01-31 17:00:51,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731585887] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:51,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946902860] [2024-01-31 17:00:51,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:00:51,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:51,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:51,793 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 17:00:51,836 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 17:00:51,927 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:00:51,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:51,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:00:51,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:52,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:52,090 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:52,097 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 17:00:52,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:52,224 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-01-31 17:00:52,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-01-31 17:00:52,254 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 17:00:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946902860] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:52,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:00:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 24 [2024-01-31 17:00:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50996185] [2024-01-31 17:00:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-01-31 17:00:52,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:52,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 158 transitions, 1582 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:52,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:52,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:52,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:55,264 INFO L124 PetriNetUnfolderBase]: 13306/22968 cut-off events. [2024-01-31 17:00:55,264 INFO L125 PetriNetUnfolderBase]: For 94156/94167 co-relation queries the response was YES. [2024-01-31 17:00:55,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89942 conditions, 22968 events. 13306/22968 cut-off events. For 94156/94167 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 192049 event pairs, 3920 based on Foata normal form. 2/22675 useless extension candidates. Maximal degree in co-relation 89877. Up to 11293 conditions per place. [2024-01-31 17:00:55,459 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 263 selfloop transitions, 62 changer transitions 1/354 dead transitions. [2024-01-31 17:00:55,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 354 transitions, 3204 flow [2024-01-31 17:00:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-31 17:00:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-01-31 17:00:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 597 transitions. [2024-01-31 17:00:55,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6091836734693877 [2024-01-31 17:00:55,462 INFO L175 Difference]: Start difference. First operand has 154 places, 158 transitions, 1582 flow. Second operand 20 states and 597 transitions. [2024-01-31 17:00:55,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 354 transitions, 3204 flow [2024-01-31 17:00:56,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 354 transitions, 3034 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-01-31 17:00:56,089 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 1691 flow [2024-01-31 17:00:56,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1691, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2024-01-31 17:00:56,090 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-01-31 17:00:56,090 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 1691 flow [2024-01-31 17:00:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:56,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:56,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:56,104 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 17:00:56,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:56,292 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 17:00:56,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash 578189214, now seen corresponding path program 12 times [2024-01-31 17:00:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:56,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976720029] [2024-01-31 17:00:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:57,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:57,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976720029] [2024-01-31 17:00:57,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976720029] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:57,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696463595] [2024-01-31 17:00:57,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:00:57,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:57,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:57,184 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 17:00:57,204 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 17:00:57,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-31 17:00:57,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:57,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:00:57,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:57,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:00:57,450 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:00:57,459 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 17:00:57,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:00:57,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696463595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:57,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:00:57,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-01-31 17:00:57,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288439283] [2024-01-31 17:00:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:57,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:00:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:00:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:00:57,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:00:57,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 1691 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:00:57,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:57,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:00:57,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:00,254 INFO L124 PetriNetUnfolderBase]: 13598/23340 cut-off events. [2024-01-31 17:01:00,254 INFO L125 PetriNetUnfolderBase]: For 94661/94672 co-relation queries the response was YES. [2024-01-31 17:01:00,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92178 conditions, 23340 events. 13598/23340 cut-off events. For 94661/94672 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 196480 event pairs, 6009 based on Foata normal form. 2/22991 useless extension candidates. Maximal degree in co-relation 92109. Up to 17878 conditions per place. [2024-01-31 17:01:00,482 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 189 selfloop transitions, 27 changer transitions 10/254 dead transitions. [2024-01-31 17:01:00,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 254 transitions, 2516 flow [2024-01-31 17:01:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:01:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:01:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2024-01-31 17:01:00,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6204081632653061 [2024-01-31 17:01:00,484 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 1691 flow. Second operand 10 states and 304 transitions. [2024-01-31 17:01:00,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 254 transitions, 2516 flow [2024-01-31 17:01:01,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 254 transitions, 2377 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-01-31 17:01:01,303 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 1663 flow [2024-01-31 17:01:01,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1663, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2024-01-31 17:01:01,304 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-01-31 17:01:01,304 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 1663 flow [2024-01-31 17:01:01,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:01:01,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:01,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:01,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-01-31 17:01:01,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-01-31 17:01:01,516 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 17:01:01,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:01,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1129392492, now seen corresponding path program 13 times [2024-01-31 17:01:01,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:01,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037349232] [2024-01-31 17:01:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:01,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037349232] [2024-01-31 17:01:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037349232] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:02,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746784075] [2024-01-31 17:01:02,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:01:02,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:02,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:02,513 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:02,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-31 17:01:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:02,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-31 17:01:02,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:02,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:01:02,773 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:01:02,780 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 17:01:02,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:02,923 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-01-31 17:01:02,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-01-31 17:01:02,956 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 17:01:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746784075] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:02,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:01:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 24 [2024-01-31 17:01:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789552753] [2024-01-31 17:01:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:01:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:01:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-01-31 17:01:02,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:01:02,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 1663 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:01:02,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:02,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:01:02,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:06,027 INFO L124 PetriNetUnfolderBase]: 14415/25041 cut-off events. [2024-01-31 17:01:06,027 INFO L125 PetriNetUnfolderBase]: For 98395/98406 co-relation queries the response was YES. [2024-01-31 17:01:06,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96043 conditions, 25041 events. 14415/25041 cut-off events. For 98395/98406 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 214540 event pairs, 4934 based on Foata normal form. 4/24724 useless extension candidates. Maximal degree in co-relation 95974. Up to 14613 conditions per place. [2024-01-31 17:01:06,290 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 222 selfloop transitions, 52 changer transitions 36/338 dead transitions. [2024-01-31 17:01:06,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 338 transitions, 3143 flow [2024-01-31 17:01:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-31 17:01:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-31 17:01:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 518 transitions. [2024-01-31 17:01:06,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6218487394957983 [2024-01-31 17:01:06,292 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 1663 flow. Second operand 17 states and 518 transitions. [2024-01-31 17:01:06,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 338 transitions, 3143 flow [2024-01-31 17:01:06,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 338 transitions, 3036 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-01-31 17:01:06,888 INFO L231 Difference]: Finished difference. Result has 188 places, 171 transitions, 1790 flow [2024-01-31 17:01:06,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1790, PETRI_PLACES=188, PETRI_TRANSITIONS=171} [2024-01-31 17:01:06,889 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-01-31 17:01:06,889 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 171 transitions, 1790 flow [2024-01-31 17:01:06,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:01:06,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:06,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:06,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-01-31 17:01:07,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-31 17:01:07,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 17:01:07,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1757024536, now seen corresponding path program 14 times [2024-01-31 17:01:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:07,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874669755] [2024-01-31 17:01:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:07,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:08,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874669755] [2024-01-31 17:01:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874669755] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717131751] [2024-01-31 17:01:08,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:01:08,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:08,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:08,246 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:08,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-31 17:01:08,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 17:01:08,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:08,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:01:08,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:08,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:01:08,481 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:01:08,489 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 17:01:08,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:01:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717131751] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:08,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:01:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-01-31 17:01:08,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470671588] [2024-01-31 17:01:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:08,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:01:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:01:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:01:08,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:01:08,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 171 transitions, 1790 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:01:08,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:08,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:01:08,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:11,407 INFO L124 PetriNetUnfolderBase]: 13579/23449 cut-off events. [2024-01-31 17:01:11,407 INFO L125 PetriNetUnfolderBase]: For 99202/99213 co-relation queries the response was YES. [2024-01-31 17:01:11,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91790 conditions, 23449 events. 13579/23449 cut-off events. For 99202/99213 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 198237 event pairs, 6393 based on Foata normal form. 2/23094 useless extension candidates. Maximal degree in co-relation 91719. Up to 18155 conditions per place. [2024-01-31 17:01:11,641 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 206 selfloop transitions, 29 changer transitions 7/270 dead transitions. [2024-01-31 17:01:11,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 270 transitions, 2710 flow [2024-01-31 17:01:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:01:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:01:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-01-31 17:01:11,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62152133580705 [2024-01-31 17:01:11,642 INFO L175 Difference]: Start difference. First operand has 188 places, 171 transitions, 1790 flow. Second operand 11 states and 335 transitions. [2024-01-31 17:01:11,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 270 transitions, 2710 flow [2024-01-31 17:01:12,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 270 transitions, 2538 flow, removed 56 selfloop flow, removed 13 redundant places. [2024-01-31 17:01:12,345 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 1768 flow [2024-01-31 17:01:12,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1768, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2024-01-31 17:01:12,345 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-01-31 17:01:12,345 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 1768 flow [2024-01-31 17:01:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:01:12,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:12,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:12,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-01-31 17:01:12,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-31 17:01:12,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 17:01:12,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash 581882706, now seen corresponding path program 15 times [2024-01-31 17:01:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:12,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060488607] [2024-01-31 17:01:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:13,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:13,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060488607] [2024-01-31 17:01:13,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060488607] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:13,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221804247] [2024-01-31 17:01:13,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:01:13,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:13,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:13,755 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:13,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-01-31 17:01:13,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 17:01:13,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:13,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjunts are in the unsatisfiable core [2024-01-31 17:01:13,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:13,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:01:13,985 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-01-31 17:01:13,993 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 17:01:13,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 17:01:13,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221804247] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:13,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 17:01:13,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-01-31 17:01:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353463254] [2024-01-31 17:01:13,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:13,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 17:01:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 17:01:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:01:14,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-31 17:01:14,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 1768 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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 17:01:14,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:14,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-31 17:01:14,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand