./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:19:07,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:19:07,309 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-21 17:19:07,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:19:07,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:19:07,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:19:07,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:19:07,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:19:07,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:19:07,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:19:07,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:19:07,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:19:07,353 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:19:07,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:19:07,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 17:19:07,355 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:19:07,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:19:07,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:19:07,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:19:07,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 17:19:07,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:19:07,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 17:19:07,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:19:07,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 17:19:07,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:19:07,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:19:07,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:19:07,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:19:07,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:19:07,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:07,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:19:07,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:19:07,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 17:19:07,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:19:07,366 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-21 17:19:07,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:19:07,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:19:07,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:19:07,368 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 17:19:07,369 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:19:07,369 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:19:07,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 [2023-11-21 17:19:07,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:19:07,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:19:07,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:19:07,693 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:19:07,694 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:19:07,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c [2023-11-21 17:19:10,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:19:11,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:19:11,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c [2023-11-21 17:19:11,063 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/data/91abc6a42/9e77f2acc60542b69ca875ed756d4082/FLAG1711c6ff4 [2023-11-21 17:19:11,085 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/data/91abc6a42/9e77f2acc60542b69ca875ed756d4082 [2023-11-21 17:19:11,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:19:11,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:19:11,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:11,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:19:11,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:19:11,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ae1800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11, skipping insertion in model container [2023-11-21 17:19:11,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,142 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:19:11,364 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_f71fd7d5-2c86-498a-8a59-bb3f4294c763/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-21 17:19:11,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:11,379 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:19:11,409 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_f71fd7d5-2c86-498a-8a59-bb3f4294c763/sv-benchmarks/c/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-21 17:19:11,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:19:11,421 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:19:11,421 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:19:11,429 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:19:11,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11 WrapperNode [2023-11-21 17:19:11,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:19:11,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:11,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:19:11,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:19:11,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,474 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-21 17:19:11,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:19:11,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:19:11,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:19:11,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:19:11,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,506 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:19:11,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:19:11,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:19:11,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:19:11,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (1/1) ... [2023-11-21 17:19:11,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:19:11,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:11,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:11,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:19:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:19:11,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 17:19:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 17:19:11,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 17:19:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 17:19:11,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 17:19:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 17:19:11,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 17:19:11,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:19:11,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 17:19:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 17:19:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 17:19:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:19:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:19:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 17:19:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:19:11,615 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 17:19:11,765 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:19:11,767 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:19:12,083 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:19:12,294 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:19:12,294 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 17:19:12,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:12 BoogieIcfgContainer [2023-11-21 17:19:12,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:19:12,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:19:12,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:19:12,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:19:12,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:19:11" (1/3) ... [2023-11-21 17:19:12,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5bd38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:12, skipping insertion in model container [2023-11-21 17:19:12,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:19:11" (2/3) ... [2023-11-21 17:19:12,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5bd38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:19:12, skipping insertion in model container [2023-11-21 17:19:12,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:19:12" (3/3) ... [2023-11-21 17:19:12,305 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-11-21 17:19:12,313 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 17:19:12,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:19:12,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 17:19:12,325 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:19:12,384 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 17:19:12,430 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:12,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:19:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:12,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:19:12,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:19:12,490 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:19:12,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-21 17:19:12,511 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=PARTIAL_ORDER_FA, 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;@febe1df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:19:12,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-21 17:19:13,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 17:19:13,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1738771257, now seen corresponding path program 1 times [2023-11-21 17:19:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:13,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791060108] [2023-11-21 17:19:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 17:19:15,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:15,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791060108] [2023-11-21 17:19:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791060108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:19:15,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:19:15,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 17:19:15,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728669176] [2023-11-21 17:19:15,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:19:15,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 17:19:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 17:19:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 17:19:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:15,100 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:15,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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) [2023-11-21 17:19:15,101 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 17:19:15,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 17:19:15,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 17:19:15,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:15,331 INFO L85 PathProgramCache]: Analyzing trace with hash 939835441, now seen corresponding path program 1 times [2023-11-21 17:19:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320188663] [2023-11-21 17:19:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 17:19:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320188663] [2023-11-21 17:19:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320188663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372251850] [2023-11-21 17:19:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:16,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:16,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:16,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:16,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 17:19:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:17,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 17:19:17,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 17:19:18,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372251850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:20,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:20,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 29 [2023-11-21 17:19:20,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750784245] [2023-11-21 17:19:20,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:20,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-21 17:19:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:20,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-21 17:19:20,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2023-11-21 17:19:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:20,444 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:20,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 17:19:20,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-21 17:19:20,446 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 17:19:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-21 17:19:27,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 17:19:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:27,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-21 17:19:27,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:19:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1087819229, now seen corresponding path program 2 times [2023-11-21 17:19:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:19:27,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080338367] [2023-11-21 17:19:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:19:27,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:19:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:19:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 17:19:28,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:19:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080338367] [2023-11-21 17:19:28,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080338367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 17:19:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599574375] [2023-11-21 17:19:28,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 17:19:28,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 17:19:28,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:19:28,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 17:19:28,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71fd7d5-2c86-498a-8a59-bb3f4294c763/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 17:19:28,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 17:19:28,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 17:19:28,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-21 17:19:28,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 17:19:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 28 proven. 111 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 17:19:31,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 17:19:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:19:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599574375] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 17:19:34,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 17:19:34,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18, 21] total 43 [2023-11-21 17:19:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655852797] [2023-11-21 17:19:34,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 17:19:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-21 17:19:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:19:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-21 17:19:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1561, Unknown=0, NotChecked=0, Total=1806 [2023-11-21 17:19:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:19:34,760 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:19:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.7209302325581395) internal successors, (160), 43 states have internal predecessors, (160), 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) [2023-11-21 17:19:34,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-21 17:19:34,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2023-11-21 17:19:34,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.