./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-figure3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB --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 a479da07a0fc6d1ad250c3f67241d6294523a3c8fee4f6d465a7a5bdc9204f86 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-22 08:58:32,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 08:58:32,141 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-22 08:58:32,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 08:58:32,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 08:58:32,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 08:58:32,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 08:58:32,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 08:58:32,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 08:58:32,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 08:58:32,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 08:58:32,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 08:58:32,192 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 08:58:32,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 08:58:32,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 08:58:32,194 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 08:58:32,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 08:58:32,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 08:58:32,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 08:58:32,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 08:58:32,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 08:58:32,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 08:58:32,198 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 08:58:32,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 08:58:32,199 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 08:58:32,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 08:58:32,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 08:58:32,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 08:58:32,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 08:58:32,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:58:32,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 08:58:32,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 08:58:32,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 08:58:32,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 08:58:32,205 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-22 08:58:32,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 08:58:32,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 08:58:32,206 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-22 08:58:32,206 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 08:58:32,206 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-22 08:58:32,206 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-22 08:58:32,207 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_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a479da07a0fc6d1ad250c3f67241d6294523a3c8fee4f6d465a7a5bdc9204f86 [2023-11-22 08:58:32,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 08:58:32,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 08:58:32,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 08:58:32,572 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 08:58:32,572 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 08:58:32,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/../../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2023-11-22 08:58:35,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 08:58:36,117 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 08:58:36,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2023-11-22 08:58:36,127 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/data/7bf96fda6/9a53c5ccd1304b20ad9e4c6f3f7855db/FLAG37d313930 [2023-11-22 08:58:36,143 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/data/7bf96fda6/9a53c5ccd1304b20ad9e4c6f3f7855db [2023-11-22 08:58:36,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 08:58:36,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 08:58:36,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 08:58:36,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 08:58:36,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 08:58:36,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c6ea3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36, skipping insertion in model container [2023-11-22 08:58:36,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 08:58:36,425 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_211ed2d6-4be7-4c9c-b43e-aac878483d9b/sv-benchmarks/c/weaver/popl20-figure3.wvr.c[2147,2160] [2023-11-22 08:58:36,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:58:36,450 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 08:58:36,478 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_211ed2d6-4be7-4c9c-b43e-aac878483d9b/sv-benchmarks/c/weaver/popl20-figure3.wvr.c[2147,2160] [2023-11-22 08:58:36,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 08:58:36,489 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 08:58:36,489 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 08:58:36,498 INFO L206 MainTranslator]: Completed translation [2023-11-22 08:58:36,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36 WrapperNode [2023-11-22 08:58:36,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 08:58:36,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 08:58:36,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 08:58:36,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 08:58:36,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,545 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2023-11-22 08:58:36,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 08:58:36,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 08:58:36,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 08:58:36,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 08:58:36,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 08:58:36,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 08:58:36,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 08:58:36,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 08:58:36,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (1/1) ... [2023-11-22 08:58:36,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 08:58:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:58:36,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 08:58:36,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 08:58:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 08:58:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-22 08:58:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-22 08:58:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-22 08:58:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-22 08:58:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 08:58:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 08:58:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 08:58:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-22 08:58:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-22 08:58:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 08:58:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 08:58:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 08:58:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 08:58:36,662 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 08:58:36,768 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 08:58:36,770 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 08:58:36,983 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 08:58:37,298 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 08:58:37,300 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 08:58:37,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:58:37 BoogieIcfgContainer [2023-11-22 08:58:37,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 08:58:37,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 08:58:37,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 08:58:37,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 08:58:37,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:58:36" (1/3) ... [2023-11-22 08:58:37,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2634c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:58:37, skipping insertion in model container [2023-11-22 08:58:37,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:58:36" (2/3) ... [2023-11-22 08:58:37,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2634c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:58:37, skipping insertion in model container [2023-11-22 08:58:37,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:58:37" (3/3) ... [2023-11-22 08:58:37,315 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2023-11-22 08:58:37,323 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-22 08:58:37,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 08:58:37,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 08:58:37,333 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 08:58:37,385 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-22 08:58:37,434 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:58:37,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-22 08:58:37,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:58:37,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-22 08:58:37,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-22 08:58:37,530 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-22 08:58:37,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-22 08:58:37,566 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;@1dcd89e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 08:58:37,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 08:58:37,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-22 08:58:37,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:58:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1316435872, now seen corresponding path program 1 times [2023-11-22 08:58:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:58:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983917478] [2023-11-22 08:58:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:58:37,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:58:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:58:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:58:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:58:38,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983917478] [2023-11-22 08:58:38,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983917478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 08:58:38,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 08:58:38,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 08:58:38,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200410255] [2023-11-22 08:58:38,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 08:58:38,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 08:58:38,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:58:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 08:58:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 08:58:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:38,476 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:58:38,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2023-11-22 08:58:38,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:58:38,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 08:58:38,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-22 08:58:38,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:58:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 987602117, now seen corresponding path program 1 times [2023-11-22 08:58:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:58:38,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442005953] [2023-11-22 08:58:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:58:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:58:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:58:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:58:39,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:58:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442005953] [2023-11-22 08:58:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442005953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:58:39,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829827690] [2023-11-22 08:58:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:58:39,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:58:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:58:39,171 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:58:39,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 08:58:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:58:39,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 08:58:39,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:58:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:58:39,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:58:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:58:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829827690] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:58:39,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:58:39,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-22 08:58:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629308462] [2023-11-22 08:58:39,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:58:39,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-22 08:58:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:58:39,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-22 08:58:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-22 08:58:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:39,739 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:58:39,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2023-11-22 08:58:39,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:58:39,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:58:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-22 08:58:40,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 08:58:40,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:58:40,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-22 08:58:40,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:58:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -67900721, now seen corresponding path program 2 times [2023-11-22 08:58:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:58:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301820036] [2023-11-22 08:58:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:58:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:58:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:58:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-22 08:58:40,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:58:40,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301820036] [2023-11-22 08:58:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301820036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:58:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252148694] [2023-11-22 08:58:40,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 08:58:40,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:58:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:58:40,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:58:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 08:58:41,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 08:58:41,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:58:41,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 08:58:41,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:58:41,165 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 08:58:41,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:58:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-22 08:58:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252148694] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:58:41,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:58:41,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2023-11-22 08:58:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389014709] [2023-11-22 08:58:41,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:58:41,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 08:58:41,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:58:41,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 08:58:41,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 08:58:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:41,293 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:58:41,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 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) [2023-11-22 08:58:41,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:58:41,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-22 08:58:41,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:58:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-22 08:58:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:58:41,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 08:58:41,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:58:41,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-22 08:58:41,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:58:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1147898534, now seen corresponding path program 3 times [2023-11-22 08:58:41,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:58:41,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900911288] [2023-11-22 08:58:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:58:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:58:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:58:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 43 proven. 52 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 08:58:42,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:58:42,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900911288] [2023-11-22 08:58:42,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900911288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:58:42,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343388975] [2023-11-22 08:58:42,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 08:58:42,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:58:42,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:58:42,200 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:58:42,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 08:58:42,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-22 08:58:42,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:58:42,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 08:58:42,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:58:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 7 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:58:42,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:58:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 7 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:58:43,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343388975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:58:43,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:58:43,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 36 [2023-11-22 08:58:43,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674688538] [2023-11-22 08:58:43,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:58:43,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-22 08:58:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:58:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-22 08:58:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2023-11-22 08:58:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:43,796 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:58:43,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 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) [2023-11-22 08:58:43,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:58:43,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-22 08:58:43,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:58:43,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:58:57,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-22 08:59:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:59:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-22 08:59:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:59:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-22 08:59:12,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 08:59:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:59:12,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-22 08:59:12,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:59:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash -705909030, now seen corresponding path program 4 times [2023-11-22 08:59:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:59:12,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222725407] [2023-11-22 08:59:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:59:12,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:59:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:59:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-22 08:59:13,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:59:13,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222725407] [2023-11-22 08:59:13,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222725407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:59:13,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116001427] [2023-11-22 08:59:13,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 08:59:13,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:59:13,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:59:13,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:59:13,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 08:59:13,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 08:59:13,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:59:13,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-22 08:59:13,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:59:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:59:13,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:59:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:59:14,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116001427] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:59:14,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:59:14,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 45 [2023-11-22 08:59:14,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561416481] [2023-11-22 08:59:14,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:59:14,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-22 08:59:14,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:59:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-22 08:59:14,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1676, Unknown=0, NotChecked=0, Total=1980 [2023-11-22 08:59:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:59:14,825 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:59:14,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.111111111111111) internal successors, (140), 45 states have internal predecessors, (140), 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) [2023-11-22 08:59:14,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:59:14,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-22 08:59:14,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:59:14,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2023-11-22 08:59:14,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:59:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:59:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-22 08:59:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:59:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-22 08:59:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-22 08:59:24,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 08:59:24,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:59:24,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-22 08:59:24,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 08:59:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1206808257, now seen corresponding path program 5 times [2023-11-22 08:59:24,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 08:59:24,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967241420] [2023-11-22 08:59:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 08:59:24,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 08:59:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 08:59:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 16 proven. 449 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 08:59:25,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 08:59:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967241420] [2023-11-22 08:59:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967241420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 08:59:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68506934] [2023-11-22 08:59:25,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 08:59:25,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 08:59:25,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 [2023-11-22 08:59:25,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 08:59:25,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211ed2d6-4be7-4c9c-b43e-aac878483d9b/bin/ugemcutter-verify-ybdnMwjCTB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 08:59:27,039 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-22 08:59:27,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 08:59:27,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-22 08:59:27,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 08:59:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 16 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:59:28,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 08:59:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 16 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 08:59:29,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68506934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 08:59:29,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 08:59:29,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 31, 31] total 66 [2023-11-22 08:59:29,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642100030] [2023-11-22 08:59:29,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 08:59:29,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-22 08:59:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 08:59:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-22 08:59:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=3700, Unknown=0, NotChecked=0, Total=4290 [2023-11-22 08:59:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 08:59:29,885 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-22 08:59:29,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.303030303030303) internal successors, (218), 66 states have internal predecessors, (218), 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) [2023-11-22 08:59:29,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-22 08:59:29,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-22 08:59:29,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-22 08:59:29,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 73 states. [2023-11-22 08:59:29,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2023-11-22 08:59:29,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.