./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:38,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:38,147 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:11:38,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:38,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:38,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:38,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:38,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:38,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:38,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:38,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:38,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:38,215 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:38,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:38,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:38,218 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:38,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:38,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:38,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:38,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:38,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:38,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:38,221 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:38,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:38,222 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:38,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:38,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:38,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:38,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:38,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:38,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:38,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:38,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:38,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:38,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:38,227 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:38,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:38,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:38,227 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:38,228 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2023-11-12 02:11:38,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:38,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:38,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:38,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:38,555 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:38,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-12 02:11:41,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:41,977 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:41,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-12 02:11:41,994 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/data/fc88a2561/4aacb55e556b4b2eaf76cb91624b178e/FLAGf0364383b [2023-11-12 02:11:42,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/data/fc88a2561/4aacb55e556b4b2eaf76cb91624b178e [2023-11-12 02:11:42,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:42,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:42,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:42,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:42,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:42,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee0b8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42, skipping insertion in model container [2023-11-12 02:11:42,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:42,353 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5898,5911] [2023-11-12 02:11:42,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:42,381 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:42,421 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5898,5911] [2023-11-12 02:11:42,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:42,446 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:42,446 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:42,454 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:42,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42 WrapperNode [2023-11-12 02:11:42,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:42,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:42,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:42,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:42,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,515 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 481 [2023-11-12 02:11:42,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:42,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:42,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:42,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:42,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:42,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:42,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:42,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:42,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (1/1) ... [2023-11-12 02:11:42,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:42,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:42,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:11:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:11:42,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:11:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:11:42,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:11:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:11:42,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:11:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:11:42,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:11:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:11:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:11:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:11:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:42,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:42,688 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:11:42,825 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:42,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:43,567 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:11:43,993 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:11:43,993 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-12 02:11:43,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:43 BoogieIcfgContainer [2023-11-12 02:11:43,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:11:43,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:11:43,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:11:44,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:11:44,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:42" (1/3) ... [2023-11-12 02:11:44,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3515eb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:44, skipping insertion in model container [2023-11-12 02:11:44,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:42" (2/3) ... [2023-11-12 02:11:44,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3515eb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:44, skipping insertion in model container [2023-11-12 02:11:44,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:43" (3/3) ... [2023-11-12 02:11:44,005 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-11-12 02:11:44,015 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:11:44,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:11:44,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:11:44,026 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:11:44,148 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:11:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 350 transitions, 728 flow [2023-11-12 02:11:44,354 INFO L124 PetriNetUnfolderBase]: 25/346 cut-off events. [2023-11-12 02:11:44,354 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:11:44,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 346 events. 25/346 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 304. Up to 2 conditions per place. [2023-11-12 02:11:44,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 350 transitions, 728 flow [2023-11-12 02:11:44,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 333 transitions, 690 flow [2023-11-12 02:11:44,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:44,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 333 transitions, 690 flow [2023-11-12 02:11:44,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 333 transitions, 690 flow [2023-11-12 02:11:44,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 333 transitions, 690 flow [2023-11-12 02:11:44,507 INFO L124 PetriNetUnfolderBase]: 25/333 cut-off events. [2023-11-12 02:11:44,507 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:11:44,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 333 events. 25/333 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 304. Up to 2 conditions per place. [2023-11-12 02:11:44,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 3336 [2023-11-12 02:12:00,593 INFO L134 LiptonReduction]: Checked pairs total: 7670 [2023-11-12 02:12:00,594 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-11-12 02:12:00,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:00,616 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=true, 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;@226e339f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:00,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-12 02:12:00,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:00,628 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2023-11-12 02:12:00,628 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:12:00,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:00,629 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] [2023-11-12 02:12:00,630 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)] === [2023-11-12 02:12:00,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1242051486, now seen corresponding path program 1 times [2023-11-12 02:12:00,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:00,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234597019] [2023-11-12 02:12:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:00,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234597019] [2023-11-12 02:12:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234597019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:01,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:01,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206400937] [2023-11-12 02:12:01,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:01,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:01,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:01,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:01,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 692 [2023-11-12 02:12:01,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 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) [2023-11-12 02:12:01,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:01,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 692 [2023-11-12 02:12:01,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:02,981 INFO L124 PetriNetUnfolderBase]: 6452/8113 cut-off events. [2023-11-12 02:12:02,981 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2023-11-12 02:12:02,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16684 conditions, 8113 events. 6452/8113 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 34033 event pairs, 1323 based on Foata normal form. 1/5569 useless extension candidates. Maximal degree in co-relation 14779. Up to 7798 conditions per place. [2023-11-12 02:12:03,055 INFO L140 encePairwiseOnDemand]: 686/692 looper letters, 58 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2023-11-12 02:12:03,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 309 flow [2023-11-12 02:12:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-11-12 02:12:03,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47928709055876684 [2023-11-12 02:12:03,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-11-12 02:12:03,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-11-12 02:12:03,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:03,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-11-12 02:12:03,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 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) [2023-11-12 02:12:03,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:03,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:03,116 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 114 flow. Second operand 3 states and 995 transitions. [2023-11-12 02:12:03,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 309 flow [2023-11-12 02:12:03,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-12 02:12:03,128 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 131 flow [2023-11-12 02:12:03,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-11-12 02:12:03,134 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-11-12 02:12:03,135 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 131 flow [2023-11-12 02:12:03,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 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) [2023-11-12 02:12:03,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:03,136 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] [2023-11-12 02:12:03,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:03,137 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)] === [2023-11-12 02:12:03,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2067567325, now seen corresponding path program 1 times [2023-11-12 02:12:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:03,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753100955] [2023-11-12 02:12:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:03,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:03,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753100955] [2023-11-12 02:12:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753100955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:03,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913564632] [2023-11-12 02:12:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:03,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:03,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-12 02:12:03,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 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) [2023-11-12 02:12:03,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:03,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-12 02:12:03,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:05,595 INFO L124 PetriNetUnfolderBase]: 9196/11827 cut-off events. [2023-11-12 02:12:05,596 INFO L125 PetriNetUnfolderBase]: For 2455/2455 co-relation queries the response was YES. [2023-11-12 02:12:05,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26970 conditions, 11827 events. 9196/11827 cut-off events. For 2455/2455 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53708 event pairs, 2792 based on Foata normal form. 290/11241 useless extension candidates. Maximal degree in co-relation 22163. Up to 6801 conditions per place. [2023-11-12 02:12:05,712 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 72 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-12 02:12:05,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 349 flow [2023-11-12 02:12:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2023-11-12 02:12:05,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797687861271676 [2023-11-12 02:12:05,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 996 transitions. [2023-11-12 02:12:05,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 996 transitions. [2023-11-12 02:12:05,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:05,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 996 transitions. [2023-11-12 02:12:05,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 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) [2023-11-12 02:12:05,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:05,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:05,738 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 131 flow. Second operand 3 states and 996 transitions. [2023-11-12 02:12:05,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 349 flow [2023-11-12 02:12:05,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:05,750 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 134 flow [2023-11-12 02:12:05,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-12 02:12:05,752 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-12 02:12:05,752 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 134 flow [2023-11-12 02:12:05,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 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) [2023-11-12 02:12:05,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:05,754 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] [2023-11-12 02:12:05,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:05,754 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)] === [2023-11-12 02:12:05,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2078253054, now seen corresponding path program 1 times [2023-11-12 02:12:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591429052] [2023-11-12 02:12:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591429052] [2023-11-12 02:12:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591429052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:05,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533918933] [2023-11-12 02:12:05,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:05,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:05,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:05,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-12 02:12:05,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 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) [2023-11-12 02:12:05,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:05,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-12 02:12:05,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:07,694 INFO L124 PetriNetUnfolderBase]: 8052/10342 cut-off events. [2023-11-12 02:12:07,694 INFO L125 PetriNetUnfolderBase]: For 2326/2326 co-relation queries the response was YES. [2023-11-12 02:12:07,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24118 conditions, 10342 events. 8052/10342 cut-off events. For 2326/2326 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 47341 event pairs, 1746 based on Foata normal form. 144/9721 useless extension candidates. Maximal degree in co-relation 7921. Up to 9219 conditions per place. [2023-11-12 02:12:07,764 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 66 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-12 02:12:07,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 327 flow [2023-11-12 02:12:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-12 02:12:07,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476878612716763 [2023-11-12 02:12:07,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-12 02:12:07,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-12 02:12:07,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:07,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-12 02:12:07,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 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) [2023-11-12 02:12:07,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:07,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:07,782 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 134 flow. Second operand 3 states and 990 transitions. [2023-11-12 02:12:07,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 327 flow [2023-11-12 02:12:07,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:07,787 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 140 flow [2023-11-12 02:12:07,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-11-12 02:12:07,788 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-11-12 02:12:07,788 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 140 flow [2023-11-12 02:12:07,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 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) [2023-11-12 02:12:07,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:07,790 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] [2023-11-12 02:12:07,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:07,790 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)] === [2023-11-12 02:12:07,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash 170030301, now seen corresponding path program 1 times [2023-11-12 02:12:07,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:07,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354612266] [2023-11-12 02:12:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:07,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:07,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354612266] [2023-11-12 02:12:07,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354612266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:07,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:07,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:07,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533263039] [2023-11-12 02:12:07,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:07,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:07,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:07,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-12 02:12:07,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 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) [2023-11-12 02:12:07,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:07,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-12 02:12:07,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:09,676 INFO L124 PetriNetUnfolderBase]: 7249/9289 cut-off events. [2023-11-12 02:12:09,676 INFO L125 PetriNetUnfolderBase]: For 3533/3533 co-relation queries the response was YES. [2023-11-12 02:12:09,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22713 conditions, 9289 events. 7249/9289 cut-off events. For 3533/3533 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40505 event pairs, 1383 based on Foata normal form. 98/8696 useless extension candidates. Maximal degree in co-relation 17187. Up to 8603 conditions per place. [2023-11-12 02:12:09,752 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 56 selfloop transitions, 2 changer transitions 8/70 dead transitions. [2023-11-12 02:12:09,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 323 flow [2023-11-12 02:12:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-12 02:12:09,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476878612716763 [2023-11-12 02:12:09,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-12 02:12:09,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-12 02:12:09,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:09,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-12 02:12:09,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 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) [2023-11-12 02:12:09,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:09,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:09,770 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 140 flow. Second operand 3 states and 990 transitions. [2023-11-12 02:12:09,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 323 flow [2023-11-12 02:12:09,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:09,775 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 146 flow [2023-11-12 02:12:09,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-11-12 02:12:09,776 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-12 02:12:09,777 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 146 flow [2023-11-12 02:12:09,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 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) [2023-11-12 02:12:09,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:09,778 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] [2023-11-12 02:12:09,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:09,779 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)] === [2023-11-12 02:12:09,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -285385413, now seen corresponding path program 1 times [2023-11-12 02:12:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:09,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917107735] [2023-11-12 02:12:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:09,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917107735] [2023-11-12 02:12:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917107735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008142414] [2023-11-12 02:12:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:09,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:09,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:09,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-12 02:12:09,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 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) [2023-11-12 02:12:09,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:09,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-12 02:12:09,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:10,684 INFO L124 PetriNetUnfolderBase]: 3605/4664 cut-off events. [2023-11-12 02:12:10,685 INFO L125 PetriNetUnfolderBase]: For 2964/2964 co-relation queries the response was YES. [2023-11-12 02:12:10,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12104 conditions, 4664 events. 3605/4664 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18794 event pairs, 1445 based on Foata normal form. 29/4390 useless extension candidates. Maximal degree in co-relation 3827. Up to 4435 conditions per place. [2023-11-12 02:12:10,716 INFO L140 encePairwiseOnDemand]: 689/692 looper letters, 47 selfloop transitions, 2 changer transitions 9/62 dead transitions. [2023-11-12 02:12:10,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 292 flow [2023-11-12 02:12:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2023-11-12 02:12:10,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47157996146435455 [2023-11-12 02:12:10,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2023-11-12 02:12:10,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2023-11-12 02:12:10,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:10,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2023-11-12 02:12:10,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 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) [2023-11-12 02:12:10,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:10,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 692.0) internal successors, (2768), 4 states have internal predecessors, (2768), 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) [2023-11-12 02:12:10,733 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 146 flow. Second operand 3 states and 979 transitions. [2023-11-12 02:12:10,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 292 flow [2023-11-12 02:12:10,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:10,737 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 156 flow [2023-11-12 02:12:10,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-11-12 02:12:10,738 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-12 02:12:10,738 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 156 flow [2023-11-12 02:12:10,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 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) [2023-11-12 02:12:10,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:10,740 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] [2023-11-12 02:12:10,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:10,740 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)] === [2023-11-12 02:12:10,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:10,741 INFO L85 PathProgramCache]: Analyzing trace with hash -332745574, now seen corresponding path program 1 times [2023-11-12 02:12:10,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:10,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786316870] [2023-11-12 02:12:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:10,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:12:11,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:11,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786316870] [2023-11-12 02:12:11,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786316870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:11,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:11,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386881441] [2023-11-12 02:12:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:11,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:11,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 692 [2023-11-12 02:12:11,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 294.25) internal successors, (1177), 4 states have internal predecessors, (1177), 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) [2023-11-12 02:12:11,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:11,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 692 [2023-11-12 02:12:11,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:11,850 INFO L124 PetriNetUnfolderBase]: 3725/4893 cut-off events. [2023-11-12 02:12:11,850 INFO L125 PetriNetUnfolderBase]: For 3058/3058 co-relation queries the response was YES. [2023-11-12 02:12:11,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12882 conditions, 4893 events. 3725/4893 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20782 event pairs, 2472 based on Foata normal form. 30/4912 useless extension candidates. Maximal degree in co-relation 7575. Up to 4650 conditions per place. [2023-11-12 02:12:11,877 INFO L140 encePairwiseOnDemand]: 688/692 looper letters, 45 selfloop transitions, 2 changer transitions 26/77 dead transitions. [2023-11-12 02:12:11,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 364 flow [2023-11-12 02:12:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2023-11-12 02:12:11,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43822254335260113 [2023-11-12 02:12:11,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2023-11-12 02:12:11,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2023-11-12 02:12:11,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:11,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2023-11-12 02:12:11,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 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) [2023-11-12 02:12:11,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:11,914 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:11,914 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 156 flow. Second operand 4 states and 1213 transitions. [2023-11-12 02:12:11,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 364 flow [2023-11-12 02:12:11,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:11,920 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 168 flow [2023-11-12 02:12:11,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-12 02:12:11,923 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-11-12 02:12:11,923 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 168 flow [2023-11-12 02:12:11,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.25) internal successors, (1177), 4 states have internal predecessors, (1177), 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) [2023-11-12 02:12:11,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:11,925 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] [2023-11-12 02:12:11,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:12:11,925 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)] === [2023-11-12 02:12:11,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash -871895065, now seen corresponding path program 1 times [2023-11-12 02:12:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:11,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021061718] [2023-11-12 02:12:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:12:12,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:12,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021061718] [2023-11-12 02:12:12,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021061718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:12,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:12,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:12,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486295109] [2023-11-12 02:12:12,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:12,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:12,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:12,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:12,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:12,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 692 [2023-11-12 02:12:12,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 294.5) internal successors, (1178), 4 states have internal predecessors, (1178), 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) [2023-11-12 02:12:12,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:12,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 692 [2023-11-12 02:12:12,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:13,315 INFO L124 PetriNetUnfolderBase]: 4092/5410 cut-off events. [2023-11-12 02:12:13,315 INFO L125 PetriNetUnfolderBase]: For 3418/3418 co-relation queries the response was YES. [2023-11-12 02:12:13,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 5410 events. 4092/5410 cut-off events. For 3418/3418 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 23318 event pairs, 2736 based on Foata normal form. 32/5432 useless extension candidates. Maximal degree in co-relation 14209. Up to 4648 conditions per place. [2023-11-12 02:12:13,353 INFO L140 encePairwiseOnDemand]: 687/692 looper letters, 45 selfloop transitions, 3 changer transitions 34/86 dead transitions. [2023-11-12 02:12:13,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 430 flow [2023-11-12 02:12:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1221 transitions. [2023-11-12 02:12:13,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411127167630058 [2023-11-12 02:12:13,361 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1221 transitions. [2023-11-12 02:12:13,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1221 transitions. [2023-11-12 02:12:13,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:13,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1221 transitions. [2023-11-12 02:12:13,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.25) internal successors, (1221), 4 states have internal predecessors, (1221), 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) [2023-11-12 02:12:13,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:13,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:13,378 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 168 flow. Second operand 4 states and 1221 transitions. [2023-11-12 02:12:13,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 430 flow [2023-11-12 02:12:13,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 422 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:13,384 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 180 flow [2023-11-12 02:12:13,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-12 02:12:13,386 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-12 02:12:13,386 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 180 flow [2023-11-12 02:12:13,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.5) internal successors, (1178), 4 states have internal predecessors, (1178), 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) [2023-11-12 02:12:13,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:13,387 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] [2023-11-12 02:12:13,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:12:13,388 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)] === [2023-11-12 02:12:13,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1082125009, now seen corresponding path program 1 times [2023-11-12 02:12:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675062431] [2023-11-12 02:12:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:12:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:13,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675062431] [2023-11-12 02:12:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675062431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:13,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:13,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800270957] [2023-11-12 02:12:13,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:13,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:13,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 692 [2023-11-12 02:12:13,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 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) [2023-11-12 02:12:13,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:13,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 692 [2023-11-12 02:12:13,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:14,875 INFO L124 PetriNetUnfolderBase]: 3792/4999 cut-off events. [2023-11-12 02:12:14,876 INFO L125 PetriNetUnfolderBase]: For 3117/3117 co-relation queries the response was YES. [2023-11-12 02:12:14,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13155 conditions, 4999 events. 3792/4999 cut-off events. For 3117/3117 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21452 event pairs, 2540 based on Foata normal form. 8/4998 useless extension candidates. Maximal degree in co-relation 13125. Up to 4646 conditions per place. [2023-11-12 02:12:14,969 INFO L140 encePairwiseOnDemand]: 682/692 looper letters, 43 selfloop transitions, 6 changer transitions 26/79 dead transitions. [2023-11-12 02:12:14,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 398 flow [2023-11-12 02:12:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:12:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1501 transitions. [2023-11-12 02:12:14,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338150289017341 [2023-11-12 02:12:14,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1501 transitions. [2023-11-12 02:12:14,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1501 transitions. [2023-11-12 02:12:14,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:14,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1501 transitions. [2023-11-12 02:12:14,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 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) [2023-11-12 02:12:14,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 692.0) internal successors, (4152), 6 states have internal predecessors, (4152), 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) [2023-11-12 02:12:14,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 692.0) internal successors, (4152), 6 states have internal predecessors, (4152), 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) [2023-11-12 02:12:14,997 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 180 flow. Second operand 5 states and 1501 transitions. [2023-11-12 02:12:14,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 398 flow [2023-11-12 02:12:15,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 388 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:15,003 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 204 flow [2023-11-12 02:12:15,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-11-12 02:12:15,005 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2023-11-12 02:12:15,005 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 204 flow [2023-11-12 02:12:15,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 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) [2023-11-12 02:12:15,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:15,006 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] [2023-11-12 02:12:15,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:12:15,007 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 2 more)] === [2023-11-12 02:12:15,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash 49086961, now seen corresponding path program 1 times [2023-11-12 02:12:15,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:15,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670911832] [2023-11-12 02:12:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:15,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:12:15,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:15,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670911832] [2023-11-12 02:12:15,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670911832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:15,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:15,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:15,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806054628] [2023-11-12 02:12:15,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:15,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:15,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:15,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:15,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 692 [2023-11-12 02:12:15,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-11-12 02:12:15,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:15,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 692 [2023-11-12 02:12:15,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:16,651 INFO L124 PetriNetUnfolderBase]: 3818/5040 cut-off events. [2023-11-12 02:12:16,651 INFO L125 PetriNetUnfolderBase]: For 3108/3108 co-relation queries the response was YES. [2023-11-12 02:12:16,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13260 conditions, 5040 events. 3818/5040 cut-off events. For 3108/3108 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21483 event pairs, 2560 based on Foata normal form. 16/5050 useless extension candidates. Maximal degree in co-relation 13225. Up to 4644 conditions per place. [2023-11-12 02:12:16,685 INFO L140 encePairwiseOnDemand]: 687/692 looper letters, 47 selfloop transitions, 3 changer transitions 25/79 dead transitions. [2023-11-12 02:12:16,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 432 flow [2023-11-12 02:12:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1212 transitions. [2023-11-12 02:12:16,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43786127167630057 [2023-11-12 02:12:16,691 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1212 transitions. [2023-11-12 02:12:16,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1212 transitions. [2023-11-12 02:12:16,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:16,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1212 transitions. [2023-11-12 02:12:16,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-11-12 02:12:16,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:16,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:16,704 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 204 flow. Second operand 4 states and 1212 transitions. [2023-11-12 02:12:16,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 432 flow [2023-11-12 02:12:16,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 404 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-12 02:12:16,710 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 200 flow [2023-11-12 02:12:16,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-11-12 02:12:16,711 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-12 02:12:16,711 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 200 flow [2023-11-12 02:12:16,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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) [2023-11-12 02:12:16,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:16,713 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] [2023-11-12 02:12:16,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:12:16,714 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 2 more)] === [2023-11-12 02:12:16,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1017120124, now seen corresponding path program 1 times [2023-11-12 02:12:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:16,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986962606] [2023-11-12 02:12:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:12:17,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:17,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986962606] [2023-11-12 02:12:17,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986962606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850429330] [2023-11-12 02:12:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:17,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:17,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:17,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:17,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:12:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:12:17,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:17,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:17,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850429330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:17,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:12:17,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-12 02:12:17,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116613126] [2023-11-12 02:12:17,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:17,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:17,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:17,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:17,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 692 [2023-11-12 02:12:17,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 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) [2023-11-12 02:12:17,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:17,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 692 [2023-11-12 02:12:17,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:19,043 INFO L124 PetriNetUnfolderBase]: 9145/11842 cut-off events. [2023-11-12 02:12:19,043 INFO L125 PetriNetUnfolderBase]: For 7952/7952 co-relation queries the response was YES. [2023-11-12 02:12:19,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31763 conditions, 11842 events. 9145/11842 cut-off events. For 7952/7952 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 52251 event pairs, 2544 based on Foata normal form. 316/12154 useless extension candidates. Maximal degree in co-relation 31731. Up to 4655 conditions per place. [2023-11-12 02:12:19,110 INFO L140 encePairwiseOnDemand]: 685/692 looper letters, 89 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2023-11-12 02:12:19,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 570 flow [2023-11-12 02:12:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2023-11-12 02:12:19,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779624277456647 [2023-11-12 02:12:19,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2023-11-12 02:12:19,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2023-11-12 02:12:19,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:19,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2023-11-12 02:12:19,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 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) [2023-11-12 02:12:19,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:19,130 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 692.0) internal successors, (3460), 5 states have internal predecessors, (3460), 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) [2023-11-12 02:12:19,130 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 200 flow. Second operand 4 states and 1323 transitions. [2023-11-12 02:12:19,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 570 flow [2023-11-12 02:12:19,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 556 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:19,149 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 276 flow [2023-11-12 02:12:19,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-11-12 02:12:19,151 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2023-11-12 02:12:19,151 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 276 flow [2023-11-12 02:12:19,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 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) [2023-11-12 02:12:19,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:19,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2023-11-12 02:12:19,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:12:19,358 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 2 more)] === [2023-11-12 02:12:19,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1644448070, now seen corresponding path program 1 times [2023-11-12 02:12:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:19,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065944473] [2023-11-12 02:12:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:12:19,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:19,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065944473] [2023-11-12 02:12:19,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065944473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789347472] [2023-11-12 02:12:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:19,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:19,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:12:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:20,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:12:20,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:20,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:12:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:12:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789347472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:12:20,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:12:20,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-12 02:12:20,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257638287] [2023-11-12 02:12:20,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:12:20,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:12:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:12:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:12:20,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 692 [2023-11-12 02:12:20,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 276 flow. Second operand has 12 states, 12 states have (on average 281.3333333333333) internal successors, (3376), 12 states have internal predecessors, (3376), 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) [2023-11-12 02:12:20,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:20,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 692 [2023-11-12 02:12:20,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:22,653 INFO L124 PetriNetUnfolderBase]: 9376/12253 cut-off events. [2023-11-12 02:12:22,653 INFO L125 PetriNetUnfolderBase]: For 12165/12165 co-relation queries the response was YES. [2023-11-12 02:12:22,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37577 conditions, 12253 events. 9376/12253 cut-off events. For 12165/12165 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 54417 event pairs, 5438 based on Foata normal form. 16/12264 useless extension candidates. Maximal degree in co-relation 36536. Up to 11827 conditions per place. [2023-11-12 02:12:22,730 INFO L140 encePairwiseOnDemand]: 686/692 looper letters, 57 selfloop transitions, 3 changer transitions 45/109 dead transitions. [2023-11-12 02:12:22,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 109 transitions, 640 flow [2023-11-12 02:12:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:12:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:12:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1743 transitions. [2023-11-12 02:12:22,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197976878612717 [2023-11-12 02:12:22,737 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1743 transitions. [2023-11-12 02:12:22,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1743 transitions. [2023-11-12 02:12:22,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:22,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1743 transitions. [2023-11-12 02:12:22,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.5) internal successors, (1743), 6 states have internal predecessors, (1743), 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) [2023-11-12 02:12:22,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 692.0) internal successors, (4844), 7 states have internal predecessors, (4844), 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) [2023-11-12 02:12:22,754 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 692.0) internal successors, (4844), 7 states have internal predecessors, (4844), 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) [2023-11-12 02:12:22,754 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 276 flow. Second operand 6 states and 1743 transitions. [2023-11-12 02:12:22,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 109 transitions, 640 flow [2023-11-12 02:12:22,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 632 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-12 02:12:22,790 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 292 flow [2023-11-12 02:12:22,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=692, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2023-11-12 02:12:22,791 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2023-11-12 02:12:22,791 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 292 flow [2023-11-12 02:12:22,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 281.3333333333333) internal successors, (3376), 12 states have internal predecessors, (3376), 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) [2023-11-12 02:12:22,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:22,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2023-11-12 02:12:22,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:12:22,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:12:23,000 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 2 more)] === [2023-11-12 02:12:23,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:23,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1588990877, now seen corresponding path program 2 times [2023-11-12 02:12:23,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:23,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783585535] [2023-11-12 02:12:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:23,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:12:23,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:23,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783585535] [2023-11-12 02:12:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783585535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:23,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951656788] [2023-11-12 02:12:23,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:12:23,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:23,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:23,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d282de8c-4f65-46d4-bfd6-5d74d2460b39/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:12:23,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:12:23,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:12:23,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:12:23,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:12:23,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:12:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:12:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951656788] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:12:23,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:12:23,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2023-11-12 02:12:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150263431] [2023-11-12 02:12:24,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:12:24,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 02:12:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 02:12:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:12:24,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 692 [2023-11-12 02:12:24,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 292 flow. Second operand has 15 states, 15 states have (on average 275.0) internal successors, (4125), 15 states have internal predecessors, (4125), 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) [2023-11-12 02:12:24,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:24,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 692 [2023-11-12 02:12:24,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand