./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:58:03,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:58:03,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:58:03,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:58:03,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:58:03,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:58:03,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:58:03,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:58:03,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:58:03,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:58:03,641 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:58:03,642 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:58:03,642 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:58:03,643 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:58:03,643 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:58:03,644 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:58:03,644 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:58:03,645 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:58:03,645 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:58:03,646 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:58:03,647 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:58:03,648 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:58:03,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:58:03,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:58:03,649 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:58:03,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:58:03,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:58:03,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:58:03,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:58:03,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:58:03,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:58:03,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:58:03,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:58:03,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:58:03,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:58:03,653 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:58:03,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:58:03,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:58:03,654 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:58:03,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:58:03,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:58:03,655 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:58:03,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:58:03,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:58:03,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:58:03,655 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:58:03,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:58:03,656 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b [2023-12-02 14:58:03,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:58:03,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:58:03,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:58:03,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:58:03,913 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:58:03,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2023-12-02 14:58:06,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:58:06,860 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:58:06,860 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2023-12-02 14:58:06,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data/b71f54d8c/c1951335bbb94da0a36383062a3b352a/FLAG79ee0978d [2023-12-02 14:58:06,881 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data/b71f54d8c/c1951335bbb94da0a36383062a3b352a [2023-12-02 14:58:06,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:58:06,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:58:06,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:58:06,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:58:06,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:58:06,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:06" (1/1) ... [2023-12-02 14:58:06,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423638b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:06, skipping insertion in model container [2023-12-02 14:58:06,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:06" (1/1) ... [2023-12-02 14:58:06,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:58:07,068 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2023-12-02 14:58:07,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:07,087 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:58:07,110 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2023-12-02 14:58:07,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:07,124 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:07,124 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:07,131 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:58:07,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07 WrapperNode [2023-12-02 14:58:07,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:58:07,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:07,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:58:07,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:58:07,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,182 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 199 [2023-12-02 14:58:07,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:07,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:58:07,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:58:07,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:58:07,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,206 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:58:07,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:58:07,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:58:07,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:58:07,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (1/1) ... [2023-12-02 14:58:07,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:58:07,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:58:07,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:58:07,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:58:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:58:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 14:58:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 14:58:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 14:58:07,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 14:58:07,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:58:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:58:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:58:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 14:58:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 14:58:07,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:58:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:58:07,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:58:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:58:07,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:58:07,311 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 14:58:07,430 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:58:07,432 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:58:07,860 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:58:08,174 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:58:08,175 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 14:58:08,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:08 BoogieIcfgContainer [2023-12-02 14:58:08,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:58:08,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:58:08,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:58:08,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:58:08,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:58:06" (1/3) ... [2023-12-02 14:58:08,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8001948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:08, skipping insertion in model container [2023-12-02 14:58:08,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:07" (2/3) ... [2023-12-02 14:58:08,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8001948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:08, skipping insertion in model container [2023-12-02 14:58:08,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:08" (3/3) ... [2023-12-02 14:58:08,187 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-12-02 14:58:08,198 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 14:58:08,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:58:08,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:58:08,212 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 14:58:08,264 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 14:58:08,301 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 32 transitions, 78 flow [2023-12-02 14:58:08,339 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 133 states, 132 states have (on average 2.4696969696969697) internal successors, (326), 132 states have internal predecessors, (326), 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) [2023-12-02 14:58:08,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:58:08,382 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=FINITE_AUTOMATA, 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;@1de2b6c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:58:08,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 14:58:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 132 states have (on average 2.4696969696969697) internal successors, (326), 132 states have internal predecessors, (326), 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) [2023-12-02 14:58:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 14:58:08,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:08,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:08,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:08,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:08,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1094523473, now seen corresponding path program 1 times [2023-12-02 14:58:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:08,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131546054] [2023-12-02 14:58:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:08,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:58:08,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131546054] [2023-12-02 14:58:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131546054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:08,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:08,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:58:08,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549187967] [2023-12-02 14:58:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:08,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:58:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:58:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:58:08,913 INFO L87 Difference]: Start difference. First operand has 133 states, 132 states have (on average 2.4696969696969697) internal successors, (326), 132 states have internal predecessors, (326), 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) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) [2023-12-02 14:58:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:09,024 INFO L93 Difference]: Finished difference Result 213 states and 537 transitions. [2023-12-02 14:58:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:58:09,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) Word has length 17 [2023-12-02 14:58:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:09,041 INFO L225 Difference]: With dead ends: 213 [2023-12-02 14:58:09,041 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 14:58:09,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:58:09,047 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:09,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:58:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 14:58:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 149. [2023-12-02 14:58:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.4662162162162162) internal successors, (365), 148 states have internal predecessors, (365), 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) [2023-12-02 14:58:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 365 transitions. [2023-12-02 14:58:09,108 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 365 transitions. Word has length 17 [2023-12-02 14:58:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:09,109 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 365 transitions. [2023-12-02 14:58:09,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) [2023-12-02 14:58:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 365 transitions. [2023-12-02 14:58:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 14:58:09,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:09,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:09,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:58:09,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:09,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash 36281946, now seen corresponding path program 1 times [2023-12-02 14:58:09,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:09,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40935740] [2023-12-02 14:58:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:09,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:58:09,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:09,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40935740] [2023-12-02 14:58:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40935740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:09,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:09,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:58:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831605607] [2023-12-02 14:58:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:58:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:58:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:09,262 INFO L87 Difference]: Start difference. First operand 149 states and 365 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-12-02 14:58:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:09,314 INFO L93 Difference]: Finished difference Result 150 states and 366 transitions. [2023-12-02 14:58:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:58:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) Word has length 20 [2023-12-02 14:58:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:09,316 INFO L225 Difference]: With dead ends: 150 [2023-12-02 14:58:09,317 INFO L226 Difference]: Without dead ends: 150 [2023-12-02 14:58:09,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:09,318 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:09,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:58:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-02 14:58:09,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-12-02 14:58:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.4563758389261743) internal successors, (366), 149 states have internal predecessors, (366), 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) [2023-12-02 14:58:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 366 transitions. [2023-12-02 14:58:09,334 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 366 transitions. Word has length 20 [2023-12-02 14:58:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:09,334 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 366 transitions. [2023-12-02 14:58:09,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-12-02 14:58:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 366 transitions. [2023-12-02 14:58:09,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 14:58:09,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:09,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:58:09,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:09,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1045863788, now seen corresponding path program 1 times [2023-12-02 14:58:09,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:09,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114456011] [2023-12-02 14:58:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:58:09,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:09,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114456011] [2023-12-02 14:58:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114456011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:09,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:09,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:58:09,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202693060] [2023-12-02 14:58:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:09,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:58:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:58:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:09,504 INFO L87 Difference]: Start difference. First operand 150 states and 366 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2023-12-02 14:58:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:09,570 INFO L93 Difference]: Finished difference Result 223 states and 551 transitions. [2023-12-02 14:58:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:58:09,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) Word has length 21 [2023-12-02 14:58:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:09,573 INFO L225 Difference]: With dead ends: 223 [2023-12-02 14:58:09,573 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 14:58:09,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:09,575 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:09,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:58:09,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 14:58:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 168. [2023-12-02 14:58:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.467065868263473) internal successors, (412), 167 states have internal predecessors, (412), 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) [2023-12-02 14:58:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 412 transitions. [2023-12-02 14:58:09,595 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 412 transitions. Word has length 21 [2023-12-02 14:58:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:09,596 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 412 transitions. [2023-12-02 14:58:09,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2023-12-02 14:58:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 412 transitions. [2023-12-02 14:58:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 14:58:09,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:09,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:09,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:58:09,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:09,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1838321869, now seen corresponding path program 1 times [2023-12-02 14:58:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:09,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008177954] [2023-12-02 14:58:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:58:09,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008177954] [2023-12-02 14:58:09,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008177954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:09,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:09,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:58:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283233400] [2023-12-02 14:58:09,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:09,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:58:09,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:09,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:58:09,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:09,688 INFO L87 Difference]: Start difference. First operand 168 states and 412 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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) [2023-12-02 14:58:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:09,748 INFO L93 Difference]: Finished difference Result 210 states and 502 transitions. [2023-12-02 14:58:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:58:09,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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) Word has length 25 [2023-12-02 14:58:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:09,751 INFO L225 Difference]: With dead ends: 210 [2023-12-02 14:58:09,751 INFO L226 Difference]: Without dead ends: 192 [2023-12-02 14:58:09,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:58:09,753 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:09,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:58:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-02 14:58:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 182. [2023-12-02 14:58:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.453038674033149) internal successors, (444), 181 states have internal predecessors, (444), 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) [2023-12-02 14:58:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 444 transitions. [2023-12-02 14:58:09,770 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 444 transitions. Word has length 25 [2023-12-02 14:58:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:09,771 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 444 transitions. [2023-12-02 14:58:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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) [2023-12-02 14:58:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 444 transitions. [2023-12-02 14:58:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 14:58:09,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:09,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:58:09,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:09,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1388612046, now seen corresponding path program 1 times [2023-12-02 14:58:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:09,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796817874] [2023-12-02 14:58:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:09,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:58:09,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796817874] [2023-12-02 14:58:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796817874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:09,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:09,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:58:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625838943] [2023-12-02 14:58:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:09,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:58:09,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:09,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:58:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:58:09,913 INFO L87 Difference]: Start difference. First operand 182 states and 444 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-12-02 14:58:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:09,977 INFO L93 Difference]: Finished difference Result 236 states and 560 transitions. [2023-12-02 14:58:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:58:09,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) Word has length 27 [2023-12-02 14:58:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:09,980 INFO L225 Difference]: With dead ends: 236 [2023-12-02 14:58:09,980 INFO L226 Difference]: Without dead ends: 183 [2023-12-02 14:58:09,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:58:09,982 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:09,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:58:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-02 14:58:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-02 14:58:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.4450549450549453) internal successors, (445), 182 states have internal predecessors, (445), 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) [2023-12-02 14:58:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 445 transitions. [2023-12-02 14:58:09,994 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 445 transitions. Word has length 27 [2023-12-02 14:58:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:09,994 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 445 transitions. [2023-12-02 14:58:09,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-12-02 14:58:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 445 transitions. [2023-12-02 14:58:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 14:58:09,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:09,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:09,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:58:09,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:09,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:09,997 INFO L85 PathProgramCache]: Analyzing trace with hash -380298745, now seen corresponding path program 1 times [2023-12-02 14:58:09,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:09,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529485643] [2023-12-02 14:58:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:58:12,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:12,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529485643] [2023-12-02 14:58:12,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529485643] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:58:12,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671758196] [2023-12-02 14:58:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:12,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:58:12,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:58:12,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:58:12,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:58:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:12,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 14:58:12,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:58:12,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:58:12,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 14:58:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:58:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:58:12,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 14:58:12,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 14:58:13,001 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 14:58:13,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 14:58:13,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 14:58:13,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 14:58:13,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 14:58:13,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2023-12-02 14:58:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:58:13,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:58:15,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:15,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 90 [2023-12-02 14:58:15,737 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-02 14:58:15,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13676 treesize of output 13167 [2023-12-02 14:58:15,952 INFO L349 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2023-12-02 14:58:15,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1564 treesize of output 1452 [2023-12-02 14:58:15,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:16,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:16,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1420 treesize of output 1068 [2023-12-02 14:58:16,054 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:16,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:16,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1036 treesize of output 876 [2023-12-02 14:58:17,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:17,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 51 [2023-12-02 14:58:17,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6710 treesize of output 6454 [2023-12-02 14:58:17,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:17,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 798 treesize of output 623 [2023-12-02 14:58:17,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:17,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 606 treesize of output 527 [2023-12-02 14:58:17,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:17,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 510 treesize of output 455 [2023-12-02 14:58:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:58:18,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671758196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:58:18,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [159066917] [2023-12-02 14:58:18,736 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:58:18,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:58:18,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 39 [2023-12-02 14:58:18,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104849994] [2023-12-02 14:58:18,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:58:18,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-02 14:58:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-02 14:58:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1256, Unknown=11, NotChecked=0, Total=1560 [2023-12-02 14:58:18,742 INFO L87 Difference]: Start difference. First operand 183 states and 445 transitions. Second operand has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:58:31,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 14:58:36,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 14:58:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:37,359 INFO L93 Difference]: Finished difference Result 1617 states and 3971 transitions. [2023-12-02 14:58:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-12-02 14:58:37,360 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-02 14:58:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:37,368 INFO L225 Difference]: With dead ends: 1617 [2023-12-02 14:58:37,368 INFO L226 Difference]: Without dead ends: 1531 [2023-12-02 14:58:37,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5845 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=3786, Invalid=15626, Unknown=48, NotChecked=0, Total=19460 [2023-12-02 14:58:37,374 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1282 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 259 mSolverCounterUnsat, 112 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 112 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:37,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 257 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2364 Invalid, 112 Unknown, 0 Unchecked, 9.5s Time] [2023-12-02 14:58:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2023-12-02 14:58:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 345. [2023-12-02 14:58:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.4680232558139537) internal successors, (849), 344 states have internal predecessors, (849), 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) [2023-12-02 14:58:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 849 transitions. [2023-12-02 14:58:37,401 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 849 transitions. Word has length 28 [2023-12-02 14:58:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:37,401 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 849 transitions. [2023-12-02 14:58:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:58:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 849 transitions. [2023-12-02 14:58:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 14:58:37,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:37,403 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:37,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:58:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 14:58:37,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:37,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash 812642514, now seen corresponding path program 2 times [2023-12-02 14:58:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:37,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298322886] [2023-12-02 14:58:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:37,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:58:38,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298322886] [2023-12-02 14:58:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298322886] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:58:38,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255208413] [2023-12-02 14:58:38,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:58:38,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:58:38,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:58:38,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:58:38,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:58:38,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 14:58:38,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:58:38,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 14:58:38,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:58:39,184 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-12-02 14:58:39,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 10 [2023-12-02 14:58:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:58:39,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:58:41,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:41,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 121 [2023-12-02 14:58:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:58:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255208413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:58:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [636850334] [2023-12-02 14:58:41,755 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:58:41,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:58:41,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 30 [2023-12-02 14:58:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88916181] [2023-12-02 14:58:41,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:58:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 14:58:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:41,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 14:58:41,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=776, Unknown=1, NotChecked=0, Total=930 [2023-12-02 14:58:41,758 INFO L87 Difference]: Start difference. First operand 345 states and 849 transitions. Second operand has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 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) [2023-12-02 14:58:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:43,517 INFO L93 Difference]: Finished difference Result 928 states and 2251 transitions. [2023-12-02 14:58:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-02 14:58:43,518 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 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) Word has length 29 [2023-12-02 14:58:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:43,523 INFO L225 Difference]: With dead ends: 928 [2023-12-02 14:58:43,523 INFO L226 Difference]: Without dead ends: 898 [2023-12-02 14:58:43,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=621, Invalid=2570, Unknown=1, NotChecked=0, Total=3192 [2023-12-02 14:58:43,524 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 443 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:43,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 181 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 14:58:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-02 14:58:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 309. [2023-12-02 14:58:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 2.4675324675324677) internal successors, (760), 308 states have internal predecessors, (760), 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) [2023-12-02 14:58:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 760 transitions. [2023-12-02 14:58:43,542 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 760 transitions. Word has length 29 [2023-12-02 14:58:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:43,542 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 760 transitions. [2023-12-02 14:58:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 30 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) [2023-12-02 14:58:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 760 transitions. [2023-12-02 14:58:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 14:58:43,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:43,544 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:43,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:58:43,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 14:58:43,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:58:43,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash -968998190, now seen corresponding path program 3 times [2023-12-02 14:58:43,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:43,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188348145] [2023-12-02 14:58:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:43,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:58:45,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:58:45,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188348145] [2023-12-02 14:58:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188348145] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:58:45,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335442322] [2023-12-02 14:58:45,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:58:45,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:58:45,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:58:45,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:58:45,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:58:45,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:58:45,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:58:45,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-02 14:58:45,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:58:45,161 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 14:58:45,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-12-02 14:58:45,180 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 14:58:45,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-12-02 14:58:45,198 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 14:58:45,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-12-02 14:58:45,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:58:45,349 INFO L349 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2023-12-02 14:58:45,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 55 [2023-12-02 14:58:45,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 14:58:45,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:58:45,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 14:58:45,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 14:58:45,964 INFO L349 Elim1Store]: treesize reduction 18, result has 58.1 percent of original size [2023-12-02 14:58:45,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 34 [2023-12-02 14:58:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:58:46,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:58:49,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:49,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 74 [2023-12-02 14:58:49,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:49,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2037 treesize of output 1957 [2023-12-02 14:58:49,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:49,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 470 treesize of output 456 [2023-12-02 14:58:49,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:49,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 421 treesize of output 353 [2023-12-02 14:58:49,181 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-12-02 14:58:49,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 141 [2023-12-02 14:58:52,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 14:58:52,419 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:52,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-02 14:58:52,429 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:52,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 14:58:52,441 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:52,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2023-12-02 14:58:52,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:52,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2023-12-02 14:58:52,484 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 14:58:52,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2023-12-02 14:58:52,504 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 14:58:52,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2023-12-02 14:58:52,522 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 14:58:52,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2023-12-02 14:58:52,546 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 14:58:52,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 27 [2023-12-02 14:58:52,570 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 14:58:52,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 22 [2023-12-02 14:58:52,585 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 14:58:52,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2023-12-02 14:58:52,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 14:58:52,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 14:58:53,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:53,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 141 treesize of output 411 [2023-12-02 14:58:53,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:58:53,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2023-12-02 14:58:53,864 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:53,864 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:58:53,870 INFO L349 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2023-12-02 14:58:53,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 64 [2023-12-02 14:58:53,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-12-02 14:58:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:58:54,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335442322] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:58:54,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1559516345] [2023-12-02 14:58:54,147 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:58:54,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:58:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 37 [2023-12-02 14:58:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566901764] [2023-12-02 14:58:54,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:58:54,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 14:58:54,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:58:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 14:58:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1196, Unknown=4, NotChecked=0, Total=1406 [2023-12-02 14:58:54,149 INFO L87 Difference]: Start difference. First operand 309 states and 760 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 37 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:59:02,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 14:59:04,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 14:59:06,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 14:59:08,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 14:59:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:08,741 INFO L93 Difference]: Finished difference Result 1952 states and 4791 transitions. [2023-12-02 14:59:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-02 14:59:08,742 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 37 states have internal predecessors, (83), 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) Word has length 29 [2023-12-02 14:59:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:08,755 INFO L225 Difference]: With dead ends: 1952 [2023-12-02 14:59:08,755 INFO L226 Difference]: Without dead ends: 1869 [2023-12-02 14:59:08,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1321, Invalid=7982, Unknown=9, NotChecked=0, Total=9312 [2023-12-02 14:59:08,760 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 889 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 56 mSolverCounterUnsat, 57 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 57 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:08,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 298 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1923 Invalid, 57 Unknown, 0 Unchecked, 10.6s Time] [2023-12-02 14:59:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2023-12-02 14:59:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 288. [2023-12-02 14:59:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.4529616724738674) internal successors, (704), 287 states have internal predecessors, (704), 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) [2023-12-02 14:59:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 704 transitions. [2023-12-02 14:59:08,779 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 704 transitions. Word has length 29 [2023-12-02 14:59:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:08,779 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 704 transitions. [2023-12-02 14:59:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 37 states have internal predecessors, (83), 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) [2023-12-02 14:59:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 704 transitions. [2023-12-02 14:59:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 14:59:08,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:08,780 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:08,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:59:08,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:08,981 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:59:08,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1881504658, now seen corresponding path program 4 times [2023-12-02 14:59:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:08,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980737056] [2023-12-02 14:59:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:59:11,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980737056] [2023-12-02 14:59:11,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980737056] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:59:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6673946] [2023-12-02 14:59:11,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 14:59:11,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:11,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:11,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:59:11,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:59:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:11,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 14:59:11,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:11,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:59:11,516 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-02 14:59:11,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 39 [2023-12-02 14:59:11,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 14:59:11,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-12-02 14:59:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:59:11,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:59:12,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:59:12,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 131 [2023-12-02 14:59:12,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2023-12-02 14:59:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:59:12,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6673946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:59:12,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767397958] [2023-12-02 14:59:12,498 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:59:12,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:59:12,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 37 [2023-12-02 14:59:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163237173] [2023-12-02 14:59:12,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:59:12,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 14:59:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 14:59:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 14:59:12,501 INFO L87 Difference]: Start difference. First operand 288 states and 704 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 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) [2023-12-02 14:59:14,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:14,485 INFO L93 Difference]: Finished difference Result 927 states and 2283 transitions. [2023-12-02 14:59:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 14:59:14,486 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 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) Word has length 29 [2023-12-02 14:59:14,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:14,491 INFO L225 Difference]: With dead ends: 927 [2023-12-02 14:59:14,491 INFO L226 Difference]: Without dead ends: 897 [2023-12-02 14:59:14,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=546, Invalid=2534, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 14:59:14,492 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 336 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:14,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 172 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 14:59:14,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-02 14:59:14,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 239. [2023-12-02 14:59:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 2.4747899159663866) internal successors, (589), 238 states have internal predecessors, (589), 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) [2023-12-02 14:59:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 589 transitions. [2023-12-02 14:59:14,503 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 589 transitions. Word has length 29 [2023-12-02 14:59:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:14,503 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 589 transitions. [2023-12-02 14:59:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 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) [2023-12-02 14:59:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 589 transitions. [2023-12-02 14:59:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 14:59:14,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:14,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:14,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 14:59:14,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:14,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:59:14,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:14,708 INFO L85 PathProgramCache]: Analyzing trace with hash -697887292, now seen corresponding path program 5 times [2023-12-02 14:59:14,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:14,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41679877] [2023-12-02 14:59:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:14,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:59:14,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41679877] [2023-12-02 14:59:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41679877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:59:14,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:59:14,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:59:14,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753397418] [2023-12-02 14:59:14,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:59:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:59:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:59:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:59:14,815 INFO L87 Difference]: Start difference. First operand 239 states and 589 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 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) [2023-12-02 14:59:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:14,900 INFO L93 Difference]: Finished difference Result 537 states and 1327 transitions. [2023-12-02 14:59:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:59:14,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 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) Word has length 32 [2023-12-02 14:59:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:14,904 INFO L225 Difference]: With dead ends: 537 [2023-12-02 14:59:14,904 INFO L226 Difference]: Without dead ends: 503 [2023-12-02 14:59:14,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:59:14,905 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:14,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:59:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-02 14:59:14,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 469. [2023-12-02 14:59:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 2.5662393162393164) internal successors, (1201), 468 states have internal predecessors, (1201), 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) [2023-12-02 14:59:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1201 transitions. [2023-12-02 14:59:14,921 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1201 transitions. Word has length 32 [2023-12-02 14:59:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:14,922 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 1201 transitions. [2023-12-02 14:59:14,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 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) [2023-12-02 14:59:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1201 transitions. [2023-12-02 14:59:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 14:59:14,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:14,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:14,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 14:59:14,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:59:14,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:14,924 INFO L85 PathProgramCache]: Analyzing trace with hash -396593056, now seen corresponding path program 6 times [2023-12-02 14:59:14,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695469901] [2023-12-02 14:59:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:59:15,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:15,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695469901] [2023-12-02 14:59:15,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695469901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:59:15,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248310403] [2023-12-02 14:59:15,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:59:15,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:15,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:15,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:59:15,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:59:15,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:59:15,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:59:15,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:59:15,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:59:15,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:59:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:59:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248310403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:59:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [375836119] [2023-12-02 14:59:15,534 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:59:15,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:59:15,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-12-02 14:59:15,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75382590] [2023-12-02 14:59:15,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:59:15,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:59:15,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:59:15,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:59:15,537 INFO L87 Difference]: Start difference. First operand 469 states and 1201 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 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) [2023-12-02 14:59:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:15,727 INFO L93 Difference]: Finished difference Result 613 states and 1537 transitions. [2023-12-02 14:59:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:59:15,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 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) Word has length 37 [2023-12-02 14:59:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:15,732 INFO L225 Difference]: With dead ends: 613 [2023-12-02 14:59:15,732 INFO L226 Difference]: Without dead ends: 470 [2023-12-02 14:59:15,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:59:15,733 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:15,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 52 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:59:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-02 14:59:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2023-12-02 14:59:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.5628997867803838) internal successors, (1202), 469 states have internal predecessors, (1202), 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) [2023-12-02 14:59:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1202 transitions. [2023-12-02 14:59:15,753 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1202 transitions. Word has length 37 [2023-12-02 14:59:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:15,754 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 1202 transitions. [2023-12-02 14:59:15,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 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) [2023-12-02 14:59:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1202 transitions. [2023-12-02 14:59:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 14:59:15,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:15,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:15,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 14:59:15,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 14:59:15,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:59:15,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 424613365, now seen corresponding path program 7 times [2023-12-02 14:59:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084508351] [2023-12-02 14:59:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:59:16,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:16,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084508351] [2023-12-02 14:59:16,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084508351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:59:16,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445045732] [2023-12-02 14:59:16,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 14:59:16,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:16,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:59:16,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:59:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:16,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:59:16,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:59:16,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:59:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:59:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445045732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:59:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [89192976] [2023-12-02 14:59:16,561 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 14:59:16,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:59:16,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-12-02 14:59:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614309954] [2023-12-02 14:59:16,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:59:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 14:59:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:59:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 14:59:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-02 14:59:16,563 INFO L87 Difference]: Start difference. First operand 470 states and 1202 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 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) [2023-12-02 14:59:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:59:16,733 INFO L93 Difference]: Finished difference Result 662 states and 1627 transitions. [2023-12-02 14:59:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 14:59:16,733 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 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) Word has length 38 [2023-12-02 14:59:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:59:16,737 INFO L225 Difference]: With dead ends: 662 [2023-12-02 14:59:16,737 INFO L226 Difference]: Without dead ends: 547 [2023-12-02 14:59:16,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-02 14:59:16,738 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 84 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:59:16,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 45 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:59:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-02 14:59:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 471. [2023-12-02 14:59:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 2.5595744680851062) internal successors, (1203), 470 states have internal predecessors, (1203), 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) [2023-12-02 14:59:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 1203 transitions. [2023-12-02 14:59:16,751 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 1203 transitions. Word has length 38 [2023-12-02 14:59:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:59:16,751 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 1203 transitions. [2023-12-02 14:59:16,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 14 states have internal predecessors, (76), 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) [2023-12-02 14:59:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 1203 transitions. [2023-12-02 14:59:16,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 14:59:16,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:59:16,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:59:16,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 14:59:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 14:59:16,954 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 14:59:16,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:59:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -394567825, now seen corresponding path program 8 times [2023-12-02 14:59:16,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:59:16,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115458409] [2023-12-02 14:59:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:59:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:59:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:59:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 14:59:19,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:59:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115458409] [2023-12-02 14:59:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115458409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:59:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475702023] [2023-12-02 14:59:19,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:59:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:59:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:59:19,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:59:19,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:59:19,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 14:59:19,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:59:19,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-02 14:59:19,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:59:19,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:59:19,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-02 14:59:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:59:19,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:59:19,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-12-02 14:59:19,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 14:59:19,471 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 14:59:19,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 14:59:19,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 14:59:19,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 14:59:19,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 14:59:19,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 14:59:21,325 INFO L349 Elim1Store]: treesize reduction 101, result has 34.0 percent of original size [2023-12-02 14:59:21,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 67 [2023-12-02 14:59:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:59:21,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:59:32,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:59:32,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 165 [2023-12-02 14:59:32,571 INFO L349 Elim1Store]: treesize reduction 29, result has 80.3 percent of original size [2023-12-02 14:59:32,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 166455 treesize of output 154156 [2023-12-02 14:59:33,362 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,362 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,368 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:59:33,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 4712 treesize of output 3616 [2023-12-02 14:59:33,599 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,602 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:59:33,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 3549 treesize of output 3353 [2023-12-02 14:59:33,805 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,809 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:59:33,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:59:33,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 3249 treesize of output 2753 [2023-12-02 15:01:48,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:01:48,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 165 [2023-12-02 15:01:49,306 INFO L349 Elim1Store]: treesize reduction 24, result has 88.5 percent of original size [2023-12-02 15:01:49,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 221191 treesize of output 204671 [2023-12-02 15:01:49,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:49,729 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:49,737 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:49,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:01:49,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 3291 treesize of output 3235 [2023-12-02 15:01:49,982 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:49,985 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:49,991 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:50,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:01:50,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 3098 treesize of output 2826 [2023-12-02 15:01:50,219 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:50,221 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:50,234 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:01:50,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:01:50,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 2784 treesize of output 2080 [2023-12-02 15:04:38,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2023-12-02 15:04:38,425 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-02 15:04:38,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2023-12-02 15:04:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [925000240] [2023-12-02 15:04:38,427 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 15:04:38,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:04:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-02 15:04:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423153637] [2023-12-02 15:04:38,427 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:04:38,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:04:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:04:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:04:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=2486, Unknown=22, NotChecked=0, Total=2970 [2023-12-02 15:04:38,429 INFO L87 Difference]: Start difference. First operand 471 states and 1203 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 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) [2023-12-02 15:04:38,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=462, Invalid=2486, Unknown=22, NotChecked=0, Total=2970 [2023-12-02 15:04:38,430 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:38,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:04:38,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:04:38,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 15:04:38,631 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-12-02 15:04:38,633 INFO L158 Benchmark]: Toolchain (without parser) took 391748.70ms. Allocated memory was 151.0MB in the beginning and 490.7MB in the end (delta: 339.7MB). Free memory was 106.2MB in the beginning and 389.3MB in the end (delta: -283.1MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2023-12-02 15:04:38,633 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory was 88.8MB in the beginning and 88.8MB in the end (delta: 79.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:04:38,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.16ms. Allocated memory is still 151.0MB. Free memory was 106.1MB in the beginning and 94.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:04:38,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.53ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 91.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:04:38,634 INFO L158 Benchmark]: Boogie Preprocessor took 36.06ms. Allocated memory is still 151.0MB. Free memory was 91.6MB in the beginning and 89.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:04:38,634 INFO L158 Benchmark]: RCFGBuilder took 955.00ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 71.7MB in the end (delta: 18.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 15:04:38,634 INFO L158 Benchmark]: TraceAbstraction took 390453.21ms. Allocated memory was 151.0MB in the beginning and 490.7MB in the end (delta: 339.7MB). Free memory was 70.9MB in the beginning and 389.3MB in the end (delta: -318.4MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-12-02 15:04:38,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory was 88.8MB in the beginning and 88.8MB in the end (delta: 79.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.16ms. Allocated memory is still 151.0MB. Free memory was 106.1MB in the beginning and 94.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.53ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 91.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.06ms. Allocated memory is still 151.0MB. Free memory was 91.6MB in the beginning and 89.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 955.00ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 71.7MB in the end (delta: 18.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 390453.21ms. Allocated memory was 151.0MB in the beginning and 490.7MB in the end (delta: 339.7MB). Free memory was 70.9MB in the beginning and 389.3MB in the end (delta: -318.4MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:04:40,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:04:40,355 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:04:40,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:04:40,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:04:40,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:04:40,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:04:40,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:04:40,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:04:40,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:04:40,390 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:04:40,391 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:04:40,392 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:04:40,392 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:04:40,393 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:04:40,393 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:04:40,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:04:40,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:04:40,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:04:40,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:04:40,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:04:40,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:04:40,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:04:40,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:04:40,399 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:04:40,399 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:04:40,400 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:04:40,400 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:04:40,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:04:40,401 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:04:40,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:04:40,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:04:40,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:04:40,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:04:40,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:04:40,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:04:40,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:04:40,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:04:40,403 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:04:40,404 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:04:40,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:04:40,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:04:40,404 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:04:40,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:04:40,405 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b [2023-12-02 15:04:40,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:04:40,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:04:40,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:04:40,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:04:40,718 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:04:40,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2023-12-02 15:04:43,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:04:43,738 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:04:43,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2023-12-02 15:04:43,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data/b580e0841/3e40a7746dc542519bc8a7376a78d0f5/FLAG04846c214 [2023-12-02 15:04:43,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/data/b580e0841/3e40a7746dc542519bc8a7376a78d0f5 [2023-12-02 15:04:43,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:04:43,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:04:43,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:43,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:04:43,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:04:43,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:43" (1/1) ... [2023-12-02 15:04:43,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb188d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:43, skipping insertion in model container [2023-12-02 15:04:43,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:43" (1/1) ... [2023-12-02 15:04:43,801 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:04:43,980 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2023-12-02 15:04:43,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:44,006 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:04:44,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:04:44,028 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2023-12-02 15:04:44,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:44,037 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:04:44,060 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_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2950,2963] [2023-12-02 15:04:44,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:44,074 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:04:44,074 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:04:44,082 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:04:44,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44 WrapperNode [2023-12-02 15:04:44,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:44,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:04:44,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:04:44,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:04:44,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,133 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 194 [2023-12-02 15:04:44,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:04:44,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:04:44,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:04:44,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:04:44,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:04:44,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:04:44,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:04:44,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:04:44,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (1/1) ... [2023-12-02 15:04:44,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:04:44,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:44,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:04:44,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:04:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:04:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:04:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:04:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:04:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 15:04:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 15:04:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 15:04:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 15:04:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 15:04:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 15:04:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:04:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:04:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:04:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:04:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:04:44,263 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 15:04:44,384 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:04:44,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:04:44,746 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:04:45,112 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:04:45,112 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 15:04:45,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:04:45 BoogieIcfgContainer [2023-12-02 15:04:45,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:04:45,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:04:45,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:04:45,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:04:45,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:04:43" (1/3) ... [2023-12-02 15:04:45,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e52a173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:04:45, skipping insertion in model container [2023-12-02 15:04:45,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:44" (2/3) ... [2023-12-02 15:04:45,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e52a173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:04:45, skipping insertion in model container [2023-12-02 15:04:45,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:04:45" (3/3) ... [2023-12-02 15:04:45,125 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-12-02 15:04:45,138 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 15:04:45,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:04:45,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:04:45,145 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 15:04:45,187 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 15:04:45,209 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 32 transitions, 78 flow [2023-12-02 15:04:45,236 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 133 states, 132 states have (on average 2.4696969696969697) internal successors, (326), 132 states have internal predecessors, (326), 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) [2023-12-02 15:04:45,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:04:45,258 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=FINITE_AUTOMATA, 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;@6bf049e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:04:45,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 15:04:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 132 states have (on average 2.4696969696969697) internal successors, (326), 132 states have internal predecessors, (326), 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) [2023-12-02 15:04:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 15:04:45,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:45,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:45,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 15:04:45,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1488390491, now seen corresponding path program 1 times [2023-12-02 15:04:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:04:45,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965476519] [2023-12-02 15:04:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:45,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:45,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:04:45,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:04:45,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 15:04:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:45,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:04:45,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:04:45,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:04:45,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:04:45,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965476519] [2023-12-02 15:04:45,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965476519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:45,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:04:45,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163623337] [2023-12-02 15:04:45,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:45,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:04:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:04:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:04:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:04:45,559 INFO L87 Difference]: Start difference. First operand has 133 states, 132 states have (on average 2.4696969696969697) internal successors, (326), 132 states have internal predecessors, (326), 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) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 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) [2023-12-02 15:04:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:45,732 INFO L93 Difference]: Finished difference Result 198 states and 491 transitions. [2023-12-02 15:04:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:04:45,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 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) Word has length 17 [2023-12-02 15:04:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:45,746 INFO L225 Difference]: With dead ends: 198 [2023-12-02 15:04:45,746 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 15:04:45,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:04:45,751 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:45,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:04:45,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 15:04:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 149. [2023-12-02 15:04:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.47972972972973) internal successors, (367), 148 states have internal predecessors, (367), 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) [2023-12-02 15:04:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions. [2023-12-02 15:04:45,797 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 17 [2023-12-02 15:04:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:45,798 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 367 transitions. [2023-12-02 15:04:45,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 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) [2023-12-02 15:04:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions. [2023-12-02 15:04:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 15:04:45,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:45,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:45,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:04:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:46,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 15:04:46,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 946570406, now seen corresponding path program 1 times [2023-12-02 15:04:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:04:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573830717] [2023-12-02 15:04:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:46,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:46,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:04:46,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:04:46,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 15:04:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:46,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:04:46,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:04:46,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:04:46,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:04:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573830717] [2023-12-02 15:04:46,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573830717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:46,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:46,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:04:46,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142122259] [2023-12-02 15:04:46,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:46,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:04:46,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:04:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:04:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:04:46,244 INFO L87 Difference]: Start difference. First operand 149 states and 367 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-12-02 15:04:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:46,596 INFO L93 Difference]: Finished difference Result 203 states and 482 transitions. [2023-12-02 15:04:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:04:46,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) Word has length 21 [2023-12-02 15:04:46,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:46,599 INFO L225 Difference]: With dead ends: 203 [2023-12-02 15:04:46,599 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 15:04:46,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:04:46,601 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:46,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:04:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 15:04:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-02 15:04:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.4611111111111112) internal successors, (443), 180 states have internal predecessors, (443), 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) [2023-12-02 15:04:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 443 transitions. [2023-12-02 15:04:46,620 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 443 transitions. Word has length 21 [2023-12-02 15:04:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:46,620 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 443 transitions. [2023-12-02 15:04:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-12-02 15:04:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 443 transitions. [2023-12-02 15:04:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:04:46,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:46,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:46,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:04:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:46,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 15:04:46,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash 634694982, now seen corresponding path program 1 times [2023-12-02 15:04:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:04:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425549007] [2023-12-02 15:04:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:46,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:46,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:04:46,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:04:46,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 15:04:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:46,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:04:46,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:04:47,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:04:47,011 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:04:47,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425549007] [2023-12-02 15:04:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425549007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:47,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:47,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:04:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023092622] [2023-12-02 15:04:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:04:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:04:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:04:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:04:47,013 INFO L87 Difference]: Start difference. First operand 181 states and 443 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-02 15:04:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:47,151 INFO L93 Difference]: Finished difference Result 234 states and 558 transitions. [2023-12-02 15:04:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:04:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) Word has length 26 [2023-12-02 15:04:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:47,154 INFO L225 Difference]: With dead ends: 234 [2023-12-02 15:04:47,154 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 15:04:47,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:04:47,155 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:47,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:04:47,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 15:04:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-02 15:04:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.453038674033149) internal successors, (444), 181 states have internal predecessors, (444), 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) [2023-12-02 15:04:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 444 transitions. [2023-12-02 15:04:47,171 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 444 transitions. Word has length 26 [2023-12-02 15:04:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:47,172 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 444 transitions. [2023-12-02 15:04:47,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-12-02 15:04:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 444 transitions. [2023-12-02 15:04:47,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 15:04:47,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:47,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:47,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 15:04:47,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:47,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 15:04:47,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash -913173689, now seen corresponding path program 1 times [2023-12-02 15:04:47,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:04:47,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060927019] [2023-12-02 15:04:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:47,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:47,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:04:47,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:04:47,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 15:04:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:47,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 15:04:47,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 15:04:47,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:04:47,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:04:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060927019] [2023-12-02 15:04:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060927019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:47,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:47,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:04:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369091810] [2023-12-02 15:04:47,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:47,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:04:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:04:47,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:04:47,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:04:47,571 INFO L87 Difference]: Start difference. First operand 182 states and 444 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-12-02 15:04:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:47,738 INFO L93 Difference]: Finished difference Result 259 states and 631 transitions. [2023-12-02 15:04:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:04:47,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) Word has length 27 [2023-12-02 15:04:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:47,740 INFO L225 Difference]: With dead ends: 259 [2023-12-02 15:04:47,740 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 15:04:47,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:04:47,742 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:47,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:04:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 15:04:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 183. [2023-12-02 15:04:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.4450549450549453) internal successors, (445), 182 states have internal predecessors, (445), 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) [2023-12-02 15:04:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 445 transitions. [2023-12-02 15:04:47,759 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 445 transitions. Word has length 27 [2023-12-02 15:04:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:47,759 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 445 transitions. [2023-12-02 15:04:47,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-12-02 15:04:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 445 transitions. [2023-12-02 15:04:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 15:04:47,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:47,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:47,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:04:47,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:47,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-02 15:04:47,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash -497053547, now seen corresponding path program 1 times [2023-12-02 15:04:47,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:04:47,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225904250] [2023-12-02 15:04:47,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:47,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:04:47,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:04:47,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:04:47,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdbd4844-45bd-49c8-bbf4-448a9a93c02f/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 15:04:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:48,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 15:04:48,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:48,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-12-02 15:04:48,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 15:04:48,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 15:04:48,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 23 [2023-12-02 15:04:49,143 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-02 15:04:49,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 82 [2023-12-02 15:04:49,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2023-12-02 15:04:50,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:04:50,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 345 [2023-12-02 15:04:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:04:51,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:04:51,803 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_110 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsge c_~v_old~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_110) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~start~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset (_ bv3 32) .cse1)) (select .cse0 (bvadd c_~queue~0.offset (_ bv2 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv1 32)))) (select .cse0 (bvadd c_~queue~0.offset .cse1)))))) (not (= c_~ok~0 (_ bv0 8)))) is different from false [2023-12-02 15:04:52,530 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse14 (bvmul (_ bv4 32) c_~i~0))) (let ((.cse1 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| .cse14 (_ bv3 32))) (.cse2 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| .cse14 (_ bv2 32))) (.cse3 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| .cse14 (_ bv1 32))) (.cse4 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| .cse14)) (.cse7 (bvmul (_ bv4 32) c_~end~0))) (and (or (not (= c_~ok~0 (_ bv0 8))) (forall ((~queue~0.offset (_ BitVec 32)) (v_ArrVal_109 (Array (_ BitVec 32) (_ BitVec 8)))) (not (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_109))) (= (let ((.cse0 (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4))) (let ((.cse6 (select .cse5 c_~queue~0.base))) (concat (concat (concat (select .cse6 (bvadd ~queue~0.offset .cse7 (_ bv3 32))) (select .cse6 (bvadd ~queue~0.offset (_ bv2 32) .cse7))) (select .cse6 (bvadd ~queue~0.offset .cse7 (_ bv1 32)))) (select .cse6 (bvadd ~queue~0.offset .cse7))))))))) (forall ((~queue~0.offset (_ BitVec 32)) (v_ArrVal_109 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_109))) (or (not (= (let ((.cse8 (select .cse9 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse8 .cse1) (select .cse8 .cse2)) (select .cse8 .cse3)) (select .cse8 .cse4))) (let ((.cse10 (select .cse9 c_~queue~0.base))) (concat (concat (concat (select .cse10 (bvadd ~queue~0.offset .cse7 (_ bv3 32))) (select .cse10 (bvadd ~queue~0.offset (_ bv2 32) .cse7))) (select .cse10 (bvadd ~queue~0.offset .cse7 (_ bv1 32)))) (select .cse10 (bvadd ~queue~0.offset .cse7)))))) (forall ((v_ArrVal_110 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsge (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (concat (concat (concat (select .cse11 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv3 32))) (select .cse11 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv2 32)))) (select .cse11 (bvadd |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (_ bv1 32)))) (select .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (let ((.cse12 (select (store .cse9 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_110) c_~queue~0.base)) (.cse13 (bvmul (_ bv4 32) c_~start~0))) (concat (concat (concat (select .cse12 (bvadd ~queue~0.offset (_ bv3 32) .cse13)) (select .cse12 (bvadd ~queue~0.offset (_ bv2 32) .cse13))) (select .cse12 (bvadd ~queue~0.offset .cse13 (_ bv1 32)))) (select .cse12 (bvadd ~queue~0.offset .cse13)))))))))))) is different from false [2023-12-02 15:04:52,863 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-12-02 15:04:52,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 3436 treesize of output 3204 [2023-12-02 15:04:58,920 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 384 DAG size of output: 291 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 15:04:58,921 INFO L349 Elim1Store]: treesize reduction 300, result has 77.7 percent of original size [2023-12-02 15:04:58,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 1067 treesize of output 1810 [2023-12-02 15:04:59,181 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,192 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,203 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,224 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,233 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,234 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,414 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,431 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,432 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:04:59,448 INFO L224 Elim1Store]: Index analysis took 338 ms [2023-12-02 15:05:00,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:05:00,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 30 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 617 treesize of output 931 [2023-12-02 15:05:00,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 190