./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.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/test-easy10.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/test-easy10.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy10.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 17:21:25,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:21:25,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:21:25,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:21:25,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:21:25,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:21:25,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:21:25,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:21:25,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:21:25,633 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:21:25,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:21:25,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:21:25,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:21:25,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:21:25,636 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:21:25,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:21:25,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:21:25,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:21:25,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:21:25,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:21:25,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:21:25,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:21:25,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:21:25,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:21:25,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:21:25,638 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:21:25,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:21:25,639 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:21:25,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:21:25,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:21:25,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:21:25,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:21:25,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:21:25,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:21:25,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:21:25,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:21:25,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:21:25,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:21:25,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:21:25,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:21:25,642 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:21:25,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:21:25,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:21:25,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:21:25,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:21:25,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:21:25,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:21:25,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:21:25,849 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:21:25,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2024-01-31 17:21:26,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:21:27,001 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:21:27,001 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2024-01-31 17:21:27,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d641dc95c/2e7d45844b4f4fda9692951f8441eed4/FLAGb37195065 [2024-01-31 17:21:27,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d641dc95c/2e7d45844b4f4fda9692951f8441eed4 [2024-01-31 17:21:27,025 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:21:27,034 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:21:27,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy10.wvr.yml/witness.yml [2024-01-31 17:21:27,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:21:27,274 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:21:27,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:21:27,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:21:27,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:21:27,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:21:27" (1/2) ... [2024-01-31 17:21:27,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57eb7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:21:27, skipping insertion in model container [2024-01-31 17:21:27,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:21:27" (1/2) ... [2024-01-31 17:21:27,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9567f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:21:27, skipping insertion in model container [2024-01-31 17:21:27,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:21:27" (2/2) ... [2024-01-31 17:21:27,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57eb7b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:27, skipping insertion in model container [2024-01-31 17:21:27,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:21:27" (2/2) ... [2024-01-31 17:21:27,283 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:21:27,377 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:21:27,400 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:21:27,611 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/test-easy10.wvr.c[3959,3972] [2024-01-31 17:21:27,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:21:27,631 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:21:27,666 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/test-easy10.wvr.c[3959,3972] [2024-01-31 17:21:27,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:21:27,678 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:21:27,679 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:21:27 WrapperNode [2024-01-31 17:21:27,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:21:27,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:21:27,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:21:27,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:21:27,686 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,701 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,728 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-01-31 17:21:27,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:21:27,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:21:27,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:21:27,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:21:27,737 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,738 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,739 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,765 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 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 17:21:27,765 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,765 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,769 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,770 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,771 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,776 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:21:27,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:21:27,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:21:27,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:21:27,779 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 05:21:27" (1/1) ... [2024-01-31 17:21:27,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:21:27,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:21:27,821 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 17:21:27,840 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 17:21:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:21:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:21:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:21:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:21:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:21:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:21:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:21:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:21:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:21:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:21:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:21:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:21:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:21:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:21:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:21:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:21:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:21:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:21:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:21:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:21:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:21:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:21:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:21:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:21:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:21:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:21:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:21:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:21:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:21:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:21:27,863 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 17:21:27,960 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:21:27,962 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:21:28,142 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:21:28,143 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:21:28,321 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:21:28,322 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:21:28,322 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:21:28 BoogieIcfgContainer [2024-01-31 17:21:28,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:21:28,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:21:28,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:21:28,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:21:28,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:21:27" (1/4) ... [2024-01-31 17:21:28,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a559b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:21:28, skipping insertion in model container [2024-01-31 17:21:28,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:21:27" (2/4) ... [2024-01-31 17:21:28,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a559b07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:21:28, skipping insertion in model container [2024-01-31 17:21:28,332 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 05:21:27" (3/4) ... [2024-01-31 17:21:28,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a559b07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:21:28, skipping insertion in model container [2024-01-31 17:21:28,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:21:28" (4/4) ... [2024-01-31 17:21:28,334 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-01-31 17:21:28,346 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:21:28,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:21:28,346 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:21:28,407 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 17:21:28,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 55 transitions, 138 flow [2024-01-31 17:21:28,481 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2024-01-31 17:21:28,482 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:21:28,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 0/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 17:21:28,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 55 transitions, 138 flow [2024-01-31 17:21:28,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 124 flow [2024-01-31 17:21:28,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:21:28,509 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;@38a009bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:21:28,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 17:21:28,529 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:21:28,529 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-01-31 17:21:28,530 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:21:28,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:28,530 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, 1, 1, 1, 1, 1] [2024-01-31 17:21:28,531 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 2 more)] === [2024-01-31 17:21:28,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 542912041, now seen corresponding path program 1 times [2024-01-31 17:21:28,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:28,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021395818] [2024-01-31 17:21:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:29,078 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 17:21:29,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:29,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021395818] [2024-01-31 17:21:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021395818] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:29,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:29,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:21:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184039104] [2024-01-31 17:21:29,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:29,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:21:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:29,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:21:29,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:21:29,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-31 17:21:29,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:29,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:29,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-31 17:21:29,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:29,343 INFO L124 PetriNetUnfolderBase]: 711/1408 cut-off events. [2024-01-31 17:21:29,344 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-01-31 17:21:29,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1408 events. 711/1408 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8967 event pairs, 180 based on Foata normal form. 11/1350 useless extension candidates. Maximal degree in co-relation 2039. Up to 936 conditions per place. [2024-01-31 17:21:29,359 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 35 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-31 17:21:29,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 229 flow [2024-01-31 17:21:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:21:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:21:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-31 17:21:29,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-01-31 17:21:29,371 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 124 flow. Second operand 3 states and 122 transitions. [2024-01-31 17:21:29,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 229 flow [2024-01-31 17:21:29,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 207 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 17:21:29,379 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2024-01-31 17:21:29,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-01-31 17:21:29,383 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2024-01-31 17:21:29,383 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2024-01-31 17:21:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:29,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:29,384 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, 1, 1, 1, 1, 1] [2024-01-31 17:21:29,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:21:29,385 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 2 more)] === [2024-01-31 17:21:29,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:29,385 INFO L85 PathProgramCache]: Analyzing trace with hash 165876777, now seen corresponding path program 2 times [2024-01-31 17:21:29,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:29,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363593112] [2024-01-31 17:21:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:29,575 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 17:21:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:29,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363593112] [2024-01-31 17:21:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363593112] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:29,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:21:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930328139] [2024-01-31 17:21:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:21:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:21:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:21:29,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-31 17:21:29,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:29,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:29,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-31 17:21:29,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:29,739 INFO L124 PetriNetUnfolderBase]: 665/1268 cut-off events. [2024-01-31 17:21:29,740 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-01-31 17:21:29,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 1268 events. 665/1268 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7797 event pairs, 492 based on Foata normal form. 25/1246 useless extension candidates. Maximal degree in co-relation 2272. Up to 960 conditions per place. [2024-01-31 17:21:29,750 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 33 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-01-31 17:21:29,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 208 flow [2024-01-31 17:21:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:21:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:21:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 17:21:29,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-01-31 17:21:29,760 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 120 transitions. [2024-01-31 17:21:29,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 208 flow [2024-01-31 17:21:29,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:21:29,763 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 120 flow [2024-01-31 17:21:29,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-01-31 17:21:29,764 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2024-01-31 17:21:29,764 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 120 flow [2024-01-31 17:21:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:29,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:29,765 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, 1, 1, 1, 1, 1] [2024-01-31 17:21:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:21:29,765 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 2 more)] === [2024-01-31 17:21:29,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1773130079, now seen corresponding path program 3 times [2024-01-31 17:21:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:29,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989930531] [2024-01-31 17:21:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:31,823 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 17:21:31,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:31,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989930531] [2024-01-31 17:21:31,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989930531] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:31,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:31,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-31 17:21:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399717399] [2024-01-31 17:21:31,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:31,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:21:31,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:21:31,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:21:32,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-31 17:21:32,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 120 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 17:21:32,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:32,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-31 17:21:32,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:35,952 INFO L124 PetriNetUnfolderBase]: 32357/46175 cut-off events. [2024-01-31 17:21:35,952 INFO L125 PetriNetUnfolderBase]: For 3868/3868 co-relation queries the response was YES. [2024-01-31 17:21:36,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95530 conditions, 46175 events. 32357/46175 cut-off events. For 3868/3868 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 300785 event pairs, 3923 based on Foata normal form. 1/46158 useless extension candidates. Maximal degree in co-relation 35073. Up to 12967 conditions per place. [2024-01-31 17:21:36,191 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 238 selfloop transitions, 14 changer transitions 23/284 dead transitions. [2024-01-31 17:21:36,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 284 transitions, 1202 flow [2024-01-31 17:21:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:21:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:21:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 458 transitions. [2024-01-31 17:21:36,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948051948051948 [2024-01-31 17:21:36,196 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 120 flow. Second operand 14 states and 458 transitions. [2024-01-31 17:21:36,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 284 transitions, 1202 flow [2024-01-31 17:21:36,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 284 transitions, 1198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:21:36,207 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 229 flow [2024-01-31 17:21:36,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=229, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2024-01-31 17:21:36,208 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2024-01-31 17:21:36,208 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 229 flow [2024-01-31 17:21:36,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 17:21:36,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:36,209 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, 1, 1, 1, 1, 1] [2024-01-31 17:21:36,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:21:36,209 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 2 more)] === [2024-01-31 17:21:36,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:36,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1606591399, now seen corresponding path program 4 times [2024-01-31 17:21:36,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:36,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260426820] [2024-01-31 17:21:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:36,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:36,319 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 17:21:36,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260426820] [2024-01-31 17:21:36,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260426820] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:36,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:36,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:21:36,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325985911] [2024-01-31 17:21:36,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:36,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:21:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:21:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:21:36,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-31 17:21:36,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:36,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:36,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-31 17:21:36,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:37,009 INFO L124 PetriNetUnfolderBase]: 4364/7866 cut-off events. [2024-01-31 17:21:37,009 INFO L125 PetriNetUnfolderBase]: For 1822/2115 co-relation queries the response was YES. [2024-01-31 17:21:37,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17816 conditions, 7866 events. 4364/7866 cut-off events. For 1822/2115 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 63935 event pairs, 1565 based on Foata normal form. 89/7048 useless extension candidates. Maximal degree in co-relation 17771. Up to 6099 conditions per place. [2024-01-31 17:21:37,060 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 35 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-31 17:21:37,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 330 flow [2024-01-31 17:21:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:21:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:21:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-31 17:21:37,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-01-31 17:21:37,062 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 229 flow. Second operand 3 states and 122 transitions. [2024-01-31 17:21:37,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 330 flow [2024-01-31 17:21:37,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 325 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 17:21:37,101 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 232 flow [2024-01-31 17:21:37,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-01-31 17:21:37,102 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2024-01-31 17:21:37,102 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 232 flow [2024-01-31 17:21:37,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:37,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:37,103 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, 1, 1, 1, 1, 1] [2024-01-31 17:21:37,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:21:37,104 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 2 more)] === [2024-01-31 17:21:37,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash -882903743, now seen corresponding path program 5 times [2024-01-31 17:21:37,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:37,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986604092] [2024-01-31 17:21:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:37,208 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 17:21:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986604092] [2024-01-31 17:21:37,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986604092] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:37,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:37,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:21:37,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553756209] [2024-01-31 17:21:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:37,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:21:37,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:21:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:21:37,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2024-01-31 17:21:37,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:37,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:37,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2024-01-31 17:21:37,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:37,699 INFO L124 PetriNetUnfolderBase]: 3209/6305 cut-off events. [2024-01-31 17:21:37,700 INFO L125 PetriNetUnfolderBase]: For 1554/1640 co-relation queries the response was YES. [2024-01-31 17:21:37,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14344 conditions, 6305 events. 3209/6305 cut-off events. For 1554/1640 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51789 event pairs, 1137 based on Foata normal form. 129/5933 useless extension candidates. Maximal degree in co-relation 11464. Up to 4559 conditions per place. [2024-01-31 17:21:37,739 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 33 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-01-31 17:21:37,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 320 flow [2024-01-31 17:21:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:21:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:21:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 17:21:37,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-01-31 17:21:37,741 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 232 flow. Second operand 3 states and 120 transitions. [2024-01-31 17:21:37,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 320 flow [2024-01-31 17:21:37,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 71 transitions, 314 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 17:21:37,769 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 228 flow [2024-01-31 17:21:37,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2024-01-31 17:21:37,771 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 18 predicate places. [2024-01-31 17:21:37,771 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 228 flow [2024-01-31 17:21:37,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 17:21:37,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:37,772 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, 1, 1, 1, 1, 1] [2024-01-31 17:21:37,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:21:37,772 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 2 more)] === [2024-01-31 17:21:37,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1767092823, now seen corresponding path program 6 times [2024-01-31 17:21:37,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:37,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999838434] [2024-01-31 17:21:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:37,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:39,160 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 17:21:39,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:39,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999838434] [2024-01-31 17:21:39,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999838434] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:39,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:39,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-31 17:21:39,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143481548] [2024-01-31 17:21:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:21:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:39,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:21:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:21:39,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-31 17:21:39,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 228 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 17:21:39,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:39,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-31 17:21:39,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:44,374 INFO L124 PetriNetUnfolderBase]: 41694/60477 cut-off events. [2024-01-31 17:21:44,374 INFO L125 PetriNetUnfolderBase]: For 37249/37249 co-relation queries the response was YES. [2024-01-31 17:21:44,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159667 conditions, 60477 events. 41694/60477 cut-off events. For 37249/37249 co-relation queries the response was YES. Maximal size of possible extension queue 1662. Compared 414244 event pairs, 8499 based on Foata normal form. 1/60472 useless extension candidates. Maximal degree in co-relation 102824. Up to 19880 conditions per place. [2024-01-31 17:21:44,761 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 266 selfloop transitions, 25 changer transitions 25/325 dead transitions. [2024-01-31 17:21:44,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 325 transitions, 1717 flow [2024-01-31 17:21:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:21:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:21:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 459 transitions. [2024-01-31 17:21:44,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961038961038961 [2024-01-31 17:21:44,763 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 228 flow. Second operand 14 states and 459 transitions. [2024-01-31 17:21:44,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 325 transitions, 1717 flow [2024-01-31 17:21:45,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 325 transitions, 1713 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:21:45,214 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 445 flow [2024-01-31 17:21:45,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=445, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2024-01-31 17:21:45,215 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 40 predicate places. [2024-01-31 17:21:45,215 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 445 flow [2024-01-31 17:21:45,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 17:21:45,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:21:45,216 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, 1, 1, 1, 1, 1] [2024-01-31 17:21:45,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:21:45,216 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 2 more)] === [2024-01-31 17:21:45,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:21:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1157522491, now seen corresponding path program 7 times [2024-01-31 17:21:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:21:45,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747359095] [2024-01-31 17:21:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:21:45,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:21:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:21:46,591 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 17:21:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:21:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747359095] [2024-01-31 17:21:46,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747359095] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:21:46,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:21:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-31 17:21:46,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180320058] [2024-01-31 17:21:46,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:21:46,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:21:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:21:46,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:21:46,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:21:46,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-31 17:21:46,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 445 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 17:21:46,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:21:46,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-31 17:21:46,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:21:56,891 INFO L124 PetriNetUnfolderBase]: 86629/126032 cut-off events. [2024-01-31 17:21:56,891 INFO L125 PetriNetUnfolderBase]: For 213750/213750 co-relation queries the response was YES. [2024-01-31 17:21:57,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390337 conditions, 126032 events. 86629/126032 cut-off events. For 213750/213750 co-relation queries the response was YES. Maximal size of possible extension queue 3792. Compared 947856 event pairs, 18221 based on Foata normal form. 1/126018 useless extension candidates. Maximal degree in co-relation 390013. Up to 39950 conditions per place. [2024-01-31 17:21:57,990 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 301 selfloop transitions, 34 changer transitions 13/357 dead transitions. [2024-01-31 17:21:57,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 357 transitions, 2414 flow [2024-01-31 17:21:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 17:21:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 17:21:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 457 transitions. [2024-01-31 17:21:57,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935064935064935 [2024-01-31 17:21:57,993 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 445 flow. Second operand 14 states and 457 transitions. [2024-01-31 17:21:57,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 357 transitions, 2414 flow [2024-01-31 17:22:04,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 357 transitions, 2340 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-01-31 17:22:04,114 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 793 flow [2024-01-31 17:22:04,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=793, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-01-31 17:22:04,115 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 60 predicate places. [2024-01-31 17:22:04,115 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 793 flow [2024-01-31 17:22:04,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 17:22:04,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:22:04,116 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, 1, 1, 1, 1, 1] [2024-01-31 17:22:04,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:22:04,116 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 2 more)] === [2024-01-31 17:22:04,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:22:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1522266515, now seen corresponding path program 8 times [2024-01-31 17:22:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:22:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373772929] [2024-01-31 17:22:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:22:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:22:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:22:05,263 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 17:22:05,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:22:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373772929] [2024-01-31 17:22:05,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373772929] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:22:05,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:22:05,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-01-31 17:22:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158724698] [2024-01-31 17:22:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:22:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-31 17:22:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:22:05,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-31 17:22:05,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-01-31 17:22:05,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-01-31 17:22:05,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 793 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 17:22:05,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:22:05,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-01-31 17:22:05,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand